| /******************************************************************************* |
| * Copyright (c) 2000, 2005 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.core.tests.compiler.regression; |
| |
| import junit.framework.*; |
| import org.eclipse.jdt.internal.compiler.impl.CompilerOptions; |
| |
| public class MethodVerifyTest extends AbstractComparableTest { |
| |
| public MethodVerifyTest(String name) { |
| super(name); |
| } |
| |
| public static Test suite() { |
| Test suite = buildTestSuite(testClass()); |
| TESTS_COUNTERS.put(testClass().getName(), new Integer(suite.countTestCases())); |
| return suite; |
| } |
| |
| public static Class testClass() { |
| return MethodVerifyTest.class; |
| } |
| |
| public void test001() { |
| this.runNegativeTest( |
| new String[] { |
| "Y.java", |
| "public class Y<T> extends X<A> { public void foo(T t) {} }\n" + |
| "class X<U> { public void foo(U u) {} }\n" + |
| "class A {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in Y.java (at line 1)\r\n" + |
| " public class Y<T> extends X<A> { public void foo(T t) {} }\r\n" + |
| " ^^^^^^^^\n" + |
| "Name clash: The method foo(T) of type Y<T> has the same erasure as foo(U) of type X<U> but does not override it\n" + |
| "----------\n" |
| // name clash: foo(T) in Y<T> and foo(U) in X<A> have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "J.java", |
| "public class J<T> implements I<A> { public void foo(T t) {} }\n" + |
| "interface I<U> { public void foo(U u); }\n" + |
| "class A {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in J.java (at line 1)\r\n" + |
| " public class J<T> implements I<A> { public void foo(T t) {} }\r\n" + |
| " ^\n" + |
| "The type J<T> must implement the inherited abstract method I<A>.foo(A)\n" + |
| "----------\n" + |
| "2. ERROR in J.java (at line 1)\r\n" + |
| " public class J<T> implements I<A> { public void foo(T t) {} }\r\n" + |
| " ^^^^^^^^\n" + |
| "Name clash: The method foo(T) of type J<T> has the same erasure as foo(U) of type I<U> but does not override it\n" + |
| "----------\n" |
| // J is not abstract and does not override abstract method foo(A) in I |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "YY.java", |
| "public class YY<T> extends X { public void foo(T t) {} }\n" + |
| "class X<U> { public void foo(U u) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in YY.java (at line 1)\r\n" + |
| " public class YY<T> extends X { public void foo(T t) {} }\r\n" + |
| " ^^^^^^^^\n" + |
| "Name clash: The method foo(T) of type YY<T> has the same erasure as foo(U) of type X<U> but does not override it\n" + |
| "----------\n" |
| // name clash: foo(T) in YY<T> and foo(U) in X have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "JJ.java", |
| "public class JJ<T> implements I { public void foo(T t) {} }\n" + |
| "interface I<U> { public void foo(U u); }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in JJ.java (at line 1)\r\n" + |
| " public class JJ<T> implements I { public void foo(T t) {} }\r\n" + |
| " ^^\n" + |
| "The type JJ<T> must implement the inherited abstract method I.foo(Object)\n" + |
| "----------\n" + |
| "2. ERROR in JJ.java (at line 1)\r\n" + |
| " public class JJ<T> implements I { public void foo(T t) {} }\r\n" + |
| " ^^^^^^^^\n" + |
| "Name clash: The method foo(T) of type JJ<T> has the same erasure as foo(U) of type I<U> but does not override it\n" + |
| "----------\n" |
| // JJ is not abstract and does not override abstract method foo(java.lang.Object) in I |
| ); |
| this.runConformTest( |
| new String[] { |
| "YYY.java", |
| "public class YYY<T> extends X<T> { public void foo(T t) {} }\n" + |
| "class X<U> { public void foo(U u) {} }\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "JJJ.java", |
| "public class JJJ<T> implements I<T> { public void foo(T t) {} }\n" + |
| "interface I<U> { public void foo(U u); }\n" |
| }, |
| "" |
| ); |
| } |
| |
| public void test002() { // separate files |
| this.runNegativeTest( |
| new String[] { |
| "Y.java", |
| "public class Y<T> extends X<A> { public void foo(T t) {} }\n" + |
| "class A {}\n", |
| "X.java", |
| "class X<U> { public void foo(U u) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in Y.java (at line 1)\r\n" + |
| " public class Y<T> extends X<A> { public void foo(T t) {} }\r\n" + |
| " ^^^^^^^^\n" + |
| "Name clash: The method foo(T) of type Y<T> has the same erasure as foo(U) of type X<U> but does not override it\n" + |
| "----------\n" |
| // name clash: foo(T) in Y<T> and foo(U) in X<A> have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "J.java", |
| "public class J<T> implements I<A> { public void foo(T t) {} }\n" + |
| "class A {}\n", |
| "I.java", |
| "interface I<U> { public void foo(U u); }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in J.java (at line 1)\r\n" + |
| " public class J<T> implements I<A> { public void foo(T t) {} }\r\n" + |
| " ^\n" + |
| "The type J<T> must implement the inherited abstract method I<A>.foo(A)\n" + |
| "----------\n" + |
| "2. ERROR in J.java (at line 1)\r\n" + |
| " public class J<T> implements I<A> { public void foo(T t) {} }\r\n" + |
| " ^^^^^^^^\n" + |
| "Name clash: The method foo(T) of type J<T> has the same erasure as foo(U) of type I<U> but does not override it\n" + |
| "----------\n" |
| // J is not abstract and does not override abstract method foo(A) in I |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "YY.java", |
| "public class YY<T> extends X { public void foo(T t) {} }\n", |
| "X.java", |
| "class X<U> { public void foo(U u) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in YY.java (at line 1)\r\n" + |
| " public class YY<T> extends X { public void foo(T t) {} }\r\n" + |
| " ^^^^^^^^\n" + |
| "Name clash: The method foo(T) of type YY<T> has the same erasure as foo(U) of type X<U> but does not override it\n" + |
| "----------\n" |
| // name clash: foo(T) in YY<T> and foo(U) in X have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "JJ.java", |
| "public class JJ<T> implements I { public void foo(T t) {} }\n", |
| "I.java", |
| "interface I<U> { public void foo(U u); }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in JJ.java (at line 1)\r\n" + |
| " public class JJ<T> implements I { public void foo(T t) {} }\r\n" + |
| " ^^\n" + |
| "The type JJ<T> must implement the inherited abstract method I.foo(Object)\n" + |
| "----------\n" + |
| "2. ERROR in JJ.java (at line 1)\r\n" + |
| " public class JJ<T> implements I { public void foo(T t) {} }\r\n" + |
| " ^^^^^^^^\n" + |
| "Name clash: The method foo(T) of type JJ<T> has the same erasure as foo(U) of type I<U> but does not override it\n" + |
| "----------\n" |
| // JJ is not abstract and does not override abstract method foo(java.lang.Object) in I |
| ); |
| this.runConformTest( |
| new String[] { |
| "YYY.java", |
| "public class YYY<T> extends X<T> { public void foo(T t) {} }\n", |
| "X.java", |
| "class X<U> { public void foo(U u) {} }\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "JJJ.java", |
| "public class JJJ<T> implements I<T> { public void foo(T t) {} }\n", |
| "I.java", |
| "interface I<U> { public void foo(U u); }\n" |
| }, |
| "" |
| ); |
| } |
| |
| public void test003() { // pick up superTypes as binaries |
| this.runConformTest( |
| new String[] { |
| "A.java", |
| "class A {}\n", |
| "B.java", |
| "class B {}\n", |
| "X.java", |
| "class X<U> { public void foo(U u) {} }\n", |
| "I.java", |
| "interface I<U> { public void foo(U u); }\n", |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "Y.java", |
| "public class Y<T> extends X<A> { public void foo(T t) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in Y.java (at line 1)\r\n" + |
| " public class Y<T> extends X<A> { public void foo(T t) {} }\r\n" + |
| " ^^^^^^^^\n" + |
| "Name clash: The method foo(T) of type Y<T> has the same erasure as foo(U) of type X<U> but does not override it\n" + |
| "----------\n", |
| // name clash: foo(T) in Y<T> and foo(U) in X<A> have the same erasure, yet neither overrides the other |
| null, |
| false, |
| null |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "J.java", |
| "public class J<T> implements I<A> { public void foo(T t) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in J.java (at line 1)\r\n" + |
| " public class J<T> implements I<A> { public void foo(T t) {} }\r\n" + |
| " ^\n" + |
| "The type J<T> must implement the inherited abstract method I<A>.foo(A)\n" + |
| "----------\n" + |
| "2. ERROR in J.java (at line 1)\r\n" + |
| " public class J<T> implements I<A> { public void foo(T t) {} }\r\n" + |
| " ^^^^^^^^\n" + |
| "Name clash: The method foo(T) of type J<T> has the same erasure as foo(U) of type I<U> but does not override it\n" + |
| "----------\n", |
| // J is not abstract and does not override abstract method foo(A) in I |
| null, |
| false, |
| null |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "YY.java", |
| "public class YY<T> extends X { public void foo(T t) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in YY.java (at line 1)\r\n" + |
| " public class YY<T> extends X { public void foo(T t) {} }\r\n" + |
| " ^^^^^^^^\n" + |
| "Name clash: The method foo(T) of type YY<T> has the same erasure as foo(U) of type X<U> but does not override it\n" + |
| "----------\n", |
| // name clash: foo(T) in YY<T> and foo(U) in X have the same erasure, yet neither overrides the other |
| null, |
| false, |
| null |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "JJ.java", |
| "public class JJ<T> implements I { public void foo(T t) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in JJ.java (at line 1)\r\n" + |
| " public class JJ<T> implements I { public void foo(T t) {} }\r\n" + |
| " ^^\n" + |
| "The type JJ<T> must implement the inherited abstract method I.foo(Object)\n" + |
| "----------\n" + |
| "2. ERROR in JJ.java (at line 1)\r\n" + |
| " public class JJ<T> implements I { public void foo(T t) {} }\r\n" + |
| " ^^^^^^^^\n" + |
| "Name clash: The method foo(T) of type JJ<T> has the same erasure as foo(U) of type I<U> but does not override it\n" + |
| "----------\n", |
| // JJ is not abstract and does not override abstract method foo(java.lang.Object) in I |
| null, |
| false, |
| null |
| ); |
| this.runConformTest( |
| new String[] { |
| "YYY.java", |
| "public class YYY<T> extends X<T> { public void foo(T t) {} }\n" |
| }, |
| "", |
| null, |
| false, |
| null |
| ); |
| this.runConformTest( |
| new String[] { |
| "JJJ.java", |
| "public class JJJ<T> implements I<T> { public void foo(T t) {} }\n" |
| }, |
| "", |
| null, |
| false, |
| null |
| ); |
| } |
| |
| public void test004() { // all together |
| this.runNegativeTest( |
| new String[] { |
| "ALL.java", |
| "class A {}\n" + |
| "class B {}\n" + |
| "class X<U> { public U foo() {return null;} }\n" + |
| "interface I<U> { public U foo(); }\n" + |
| |
| "class J<T> implements I<B> { public T foo() {return null;} }\n" + |
| "class K<T> implements I<T> { public T foo() {return null;} }\n" + |
| "class L<T> implements I { public T foo() {return null;} }\n" + |
| |
| "class Y<T> extends X<A> { public T foo() { return super.foo(); } }\n" + |
| "class Z<T> extends X<T> { @Override public T foo() { return super.foo(); } }\n" + |
| "class W<T> extends X { @Override public T foo() { return super.foo(); } }\n", |
| }, |
| "----------\n" + |
| "1. ERROR in ALL.java (at line 5)\n" + |
| " class J<T> implements I<B> { public T foo() {return null;} }\n" + |
| " ^^^^^\n" + |
| "The return type is incompatible with I<B>.foo()\n" + |
| "----------\n" + |
| "2. ERROR in ALL.java (at line 8)\n" + |
| " class Y<T> extends X<A> { public T foo() { return super.foo(); } }\n" + |
| " ^^^^^\n" + |
| "The return type is incompatible with X<A>.foo()\n" + |
| "----------\n" + |
| "3. ERROR in ALL.java (at line 8)\n" + |
| " class Y<T> extends X<A> { public T foo() { return super.foo(); } }\n" + |
| " ^^^^^^^^^^^\n" + |
| "Type mismatch: cannot convert from A to T\n" + |
| "----------\n" + |
| "4. ERROR in ALL.java (at line 10)\n" + |
| " class W<T> extends X { @Override public T foo() { return super.foo(); } }\n" + |
| " ^^^^^^^^^^^\n" + |
| "Type mismatch: cannot convert from Object to T\n" + |
| "----------\n" |
| /* |
| ALL.java:5: J is not abstract and does not override abstract method foo() in I |
| ALL.java:5: foo() in J cannot implement foo() in I; attempting to use incompatible return type |
| ALL.java:8: foo() in Y cannot override foo() in X; attempting to use incompatible return type |
| ALL.java:8: incompatible types |
| found : A |
| required: T |
| class Y<T> extends X<A> { public T foo() { return super.foo(); } } |
| ^ |
| ALL.java:10: incompatible types |
| found : java.lang.Object |
| required: T |
| class W<T> extends X { public T foo() { return super.foo(); } } |
| */ |
| ); |
| } |
| |
| public void test005() { // separate files |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A {}\n", |
| "B.java", |
| "class B {}\n", |
| "X.java", |
| "class X<U> { public U foo() {return null;} }\n", |
| "I.java", |
| "interface I<U> { public U foo(); }\n", |
| |
| "J.java", |
| "class J<T> implements I<B> { public T foo() {return null;} }\n", |
| "K.java", |
| "class K<T> implements I<T> { public T foo() {return null;} }\n", |
| "L.java", |
| "class L<T> implements I { public T foo() {return null;} }\n", |
| |
| "Y.java", |
| "class Y<T> extends X<A> { public T foo() { return super.foo(); } }\n", |
| "Z.java", |
| "class Z<T> extends X<T> { @Override public T foo() { return super.foo(); } }\n", |
| "W.java", |
| "class W<T> extends X { @Override public T foo() { return super.foo(); } }\n", |
| }, |
| "----------\n" + |
| "1. ERROR in J.java (at line 1)\n" + |
| " class J<T> implements I<B> { public T foo() {return null;} }\n" + |
| " ^^^^^\n" + |
| "The return type is incompatible with I<B>.foo()\n" + |
| "----------\n" + |
| "----------\n" + |
| "1. ERROR in Y.java (at line 1)\n" + |
| " class Y<T> extends X<A> { public T foo() { return super.foo(); } }\n" + |
| " ^^^^^\n" + |
| "The return type is incompatible with X<A>.foo()\n" + |
| "----------\n" + |
| "2. ERROR in Y.java (at line 1)\n" + |
| " class Y<T> extends X<A> { public T foo() { return super.foo(); } }\n" + |
| " ^^^^^^^^^^^\n" + |
| "Type mismatch: cannot convert from A to T\n" + |
| "----------\n" + |
| "----------\n" + |
| "1. ERROR in W.java (at line 1)\n" + |
| " class W<T> extends X { @Override public T foo() { return super.foo(); } }\n" + |
| " ^^^^^^^^^^^\n" + |
| "Type mismatch: cannot convert from Object to T\n" + |
| "----------\n" |
| /* |
| J.java:1: J is not abstract and does not override abstract method foo() in I |
| J.java:1: foo() in J cannot implement foo() in I; attempting to use incompatible return type |
| W.java:1: incompatible types |
| found : java.lang.Object |
| required: T |
| class W<T> extends X { public T foo() { return super.foo(); } } |
| Y.java:1: foo() in Y cannot override foo() in X; attempting to use incompatible return type |
| Y.java:1: incompatible types |
| found : A |
| required: T |
| class Y<T> extends X<A> { public T foo() { return super.foo(); } } |
| */ |
| ); |
| } |
| |
| public void test006() { // pick up superTypes as binaries |
| this.runConformTest( |
| new String[] { |
| "A.java", |
| "class A {}\n", |
| "B.java", |
| "class B {}\n", |
| "X.java", |
| "class X<U> { public U foo() {return null;} }\n", |
| "I.java", |
| "interface I<U> { public U foo(); }\n", |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "J.java", |
| "class J<T> implements I<B> { public T foo() {return null;} }\n", |
| "K.java", |
| "class K<T> implements I<T> { public T foo() {return null;} }\n", |
| "L.java", |
| "class L<T> implements I { public T foo() {return null;} }\n", |
| |
| "Y.java", |
| "class Y<T> extends X<A> { public T foo() { return super.foo(); } }\n", |
| "Z.java", |
| "class Z<T> extends X<T> { @Override public T foo() { return super.foo(); } }\n", |
| "W.java", |
| "class W<T> extends X { @Override public T foo() { return super.foo(); } }\n", |
| }, |
| "----------\n" + |
| "1. ERROR in J.java (at line 1)\n" + |
| " class J<T> implements I<B> { public T foo() {return null;} }\n" + |
| " ^^^^^\n" + |
| "The return type is incompatible with I<B>.foo()\n" + |
| "----------\n" + |
| "----------\n" + |
| "1. ERROR in Y.java (at line 1)\n" + |
| " class Y<T> extends X<A> { public T foo() { return super.foo(); } }\n" + |
| " ^^^^^\n" + |
| "The return type is incompatible with X<A>.foo()\n" + |
| "----------\n" + |
| "2. ERROR in Y.java (at line 1)\n" + |
| " class Y<T> extends X<A> { public T foo() { return super.foo(); } }\n" + |
| " ^^^^^^^^^^^\n" + |
| "Type mismatch: cannot convert from A to T\n" + |
| "----------\n" + |
| "----------\n" + |
| "1. ERROR in W.java (at line 1)\n" + |
| " class W<T> extends X { @Override public T foo() { return super.foo(); } }\n" + |
| " ^^^^^^^^^^^\n" + |
| "Type mismatch: cannot convert from Object to T\n" + |
| "----------\n", |
| /* |
| J.java:1: J is not abstract and does not override abstract method foo() in I |
| J.java:1: foo() in J cannot implement foo() in I; attempting to use incompatible return type |
| W.java:1: incompatible types |
| found : java.lang.Object |
| required: T |
| class W<T> extends X { public T foo() { return super.foo(); } } |
| Y.java:1: foo() in Y cannot override foo() in X; attempting to use incompatible return type |
| Y.java:1: incompatible types |
| found : A |
| required: T |
| class Y<T> extends X<A> { public T foo() { return super.foo(); } } |
| */ |
| null, |
| false, |
| null |
| ); |
| } |
| |
| public void test007() { // simple covariance cases |
| this.runConformTest( |
| new String[] { |
| "A.java", |
| "abstract class A implements I {}\n" + |
| "interface I extends J { String foo(); }\n" + |
| "interface J { Object foo(); }\n", |
| "X.java", |
| "abstract class X1 extends A implements J {}\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "abstract class A implements I {}\n" + |
| "interface I extends J { Object foo(); }\n" + |
| "interface J { String foo(); }\n", |
| "X.java", |
| "abstract class X2 extends A implements J {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in A.java (at line 1)\r\n" + |
| " abstract class A implements I {}\r\n" + |
| " ^\n" + |
| "The return type is incompatible with J.foo(), I.foo()\n" + |
| "----------\n" + |
| "2. ERROR in A.java (at line 2)\r\n" + |
| " interface I extends J { Object foo(); }\r\n" + |
| " ^^^^^\n" + |
| "The return type is incompatible with J.foo()\n" + |
| "----------\n" + |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " abstract class X2 extends A implements J {}\r\n" + |
| " ^^\n" + |
| "The return type is incompatible with I.foo(), J.foo()\n" + |
| "----------\n" |
| ); |
| this.runConformTest( |
| new String[] { |
| "A.java", |
| "abstract class A implements I {}\n" + |
| "interface I { String foo(); }\n", |
| "X.java", |
| "abstract class X3 extends A implements J {}\n" + |
| "interface J { Object foo(); }\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "A.java", |
| "abstract class A implements I {}\n" + |
| "interface I { Object foo(); }\n", |
| "X.java", |
| "abstract class X4 extends A implements J {}\n" + |
| "interface J { String foo(); }\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "A.java", |
| "class A { public String foo() { return null; } }\n" + |
| "interface I { Object foo(); }\n", |
| "X.java", |
| "abstract class X5 extends A implements I {}\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A { public Object foo() { return null; } }\n" + |
| "interface I { String foo(); }\n", |
| "X.java", |
| "abstract class X6 extends A implements I {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " abstract class X6 extends A implements I {}\r\n" + |
| " ^^\n" + |
| "The return type is incompatible with I.foo(), A.foo()\n" + |
| "----------\n" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A { int get(short i, short s) { return i; } }\n" + |
| "class B extends A { short get(short i, short s) {return i; } }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in A.java (at line 2)\r\n" + |
| " class B extends A { short get(short i, short s) {return i; } }\r\n" + |
| " ^^^^^^^^^^^^^^^^^^^^^\n" + |
| "The return type is incompatible with A.get(short, short)\n" + |
| "----------\n" |
| ); |
| } |
| |
| public void test008() { // covariance test |
| this.runNegativeTest( |
| new String[] { |
| "ALL.java", |
| "interface I { I foo(); }\n" + |
| "class A implements I { public A foo() { return null; } }\n" + |
| "class B extends A { @Override public B foo() { return null; } }\n" + |
| "class C extends B { public A foo() { return null; } }\n" + |
| "class D extends B implements I {}\n", |
| }, |
| "----------\n" + |
| "1. ERROR in ALL.java (at line 4)\r\n" + |
| " class C extends B { public A foo() { return null; } }\r\n" + |
| " ^^^^^\n" + |
| "The return type is incompatible with B.foo()\n" + |
| "----------\n" |
| // foo() in C cannot override foo() in B; attempting to use incompatible return type |
| ); |
| } |
| |
| public void test009() { |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class G<T> {}\n" + |
| "interface I { void foo(G<I> x); }\n" + |
| "abstract class A implements I { void foo(G<A> x) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in A.java (at line 3)\r\n" + |
| " abstract class A implements I { void foo(G<A> x) {} }\r\n" + |
| " ^^^^^^^^^^^\n" + |
| "Name clash: The method foo(G<A>) of type A has the same erasure as foo(G<I>) of type I but does not override it\n" + |
| "----------\n" |
| // name clash: foo(G<A>) in A and foo(G<I>) in I have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class G<T> {}\n" + |
| "interface I { I foo(G<I> x); }\n" + |
| "abstract class A implements I { I foo(G<A> x) { return null; } }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in A.java (at line 3)\r\n" + |
| " abstract class A implements I { I foo(G<A> x) { return null; } }\r\n" + |
| " ^^^^^^^^^^^\n" + |
| "Name clash: The method foo(G<A>) of type A has the same erasure as foo(G<I>) of type I but does not override it\n" + |
| "----------\n" |
| // name clash: foo(G<A>) in A and foo(G<I>) in I have the same erasure, yet neither overrides the other |
| ); |
| } |
| |
| public void test010() { // executable bridge method case |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " public X foo() {\n" + |
| " System.out.println(\"Did NOT add bridge method\");\n" + |
| " return this;\n" + |
| " }\n" + |
| " public static void main(String[] args) throws Exception {\n" + |
| " X x = new A();\n" + |
| " x.foo();\n" + |
| " System.out.print(\" + \");\n" + |
| " I i = new A();\n" + |
| " i.foo();\n" + |
| " }\n" + |
| "}\n" + |
| "interface I {\n" + |
| " public I foo();\n" + |
| "}\n" + |
| "class A extends X implements I {\n" + |
| " public A foo() {\n" + |
| " System.out.print(\"Added bridge method\");\n" + |
| " return this;\n" + |
| " }\n" + |
| "}\n" |
| }, |
| "Added bridge method + Added bridge method" |
| ); |
| } |
| |
| public void test011() { |
| // javac 1.5.0 will only issue 1 name clash per compile... doesn't matter how many source files are involved |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A { <T> void foo(T t) {} }\n" + |
| "interface I { <T> void foo(T t); }\n", |
| "X.java", |
| "abstract class X1 extends A implements I {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " abstract class X1 extends A implements I {}\r\n" + |
| " ^^\n" + |
| "The inherited method A.foo(T) cannot hide the public abstract method in I\n" + |
| "----------\n" |
| // <T>foo(T) in A cannot implement <T>foo(T) in I; attempting to assign weaker access privileges; was public |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A { <T, S> void foo(T t) {} }\n" + |
| "interface I { <T> void foo(T t); }\n", |
| "X.java", |
| "abstract class X2 extends A implements I {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\n" + |
| " abstract class X2 extends A implements I {}\n" + |
| " ^^\n" + |
| "Name clash: The method foo(T) of type A has the same erasure as foo(T) of type I but does not override it\n" + |
| "----------\n" |
| // name clash: <T,S>foo(T) in A and <T>foo(T) in I have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A { <T> void foo(T t) {} }\n" + |
| "interface I { <T, S> void foo(T t); }\n", |
| "X.java", |
| "abstract class X3 extends A implements I {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\n" + |
| " abstract class X3 extends A implements I {}\n" + |
| " ^^\n" + |
| "Name clash: The method foo(T) of type A has the same erasure as foo(T) of type I but does not override it\n" + |
| "----------\n" |
| // name clash: <T>foo(T) in A and <T,S>foo(T) in I have the same erasure, yet neither overrides the other |
| ); |
| } |
| |
| public void test012() { |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A { public <T> void foo(T s) {} }\n" + |
| "class Y1 extends A { @Override void foo(Object s) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in A.java (at line 2)\n" + |
| " class Y1 extends A { @Override void foo(Object s) {} }\n" + |
| " ^^^^^^^^^^^^^\n" + |
| "Cannot reduce the visibility of the inherited method from A\n" + |
| "----------\n" |
| // foo(java.lang.Object) in Y1 cannot override <T>foo(T) in A; attempting to assign weaker access privileges; was public |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A { public <T> void foo(T[] s) {} }\n" + |
| "class Y2 extends A { @Override void foo(Object[] s) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in A.java (at line 2)\n" + |
| " class Y2 extends A { @Override void foo(Object[] s) {} }\n" + |
| " ^^^^^^^^^^^^^^^\n" + |
| "Cannot reduce the visibility of the inherited method from A\n" + |
| "----------\n" |
| // foo(java.lang.Object[]) in Y2 cannot override <T>foo(T[]) in A; attempting to assign weaker access privileges; was public |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A { public void foo(Class<Object> s) {} }\n" + |
| "class Y3 extends A { @Override void foo(Class<Object> s) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in A.java (at line 2)\r\n" + |
| " class Y3 extends A { @Override void foo(Class<Object> s) {} }\r\n" + |
| " ^^^^^^^^^^^^^^^^^^^^\n" + |
| "Cannot reduce the visibility of the inherited method from A\n" + |
| "----------\n" |
| // foo(java.lang.Class<java.lang.Object>) in Y3 cannot override foo(java.lang.Class<java.lang.Object>) in A; attempting to assign weaker access privileges; was public |
| ); |
| } |
| |
| public void test013() { |
| // javac 1.5.0 will only issue 1 name clash per compile... doesn't matter how many source files are involved |
| this.runConformTest( |
| new String[] { |
| "A.java", |
| "class A { public <T> void foo(Class<T> s) {} }\n" + |
| "interface I { <T> void foo(Class<T> s); }\n", |
| "X.java", |
| "abstract class X0 extends A implements I {}\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A { <T, S> void foo(Class<T> s) {} }\n" + |
| "interface I { <T> void foo(Class<T> s); }\n", |
| "X.java", |
| "abstract class X1 extends A implements I {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " abstract class X1 extends A implements I {}\r\n" + |
| " ^^\n" + |
| "Name clash: The method foo(Class<T>) of type A has the same erasure as foo(Class<T>) of type I but does not override it\n" + |
| "----------\n" |
| // name clash: <T,S>foo(java.lang.Class<T>) in A and <T>foo(java.lang.Class<T>) in I have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A { <T> void foo(Class<T> s) {} }\n" + |
| "interface I { <T, S> void foo(Class<T> s); }\n", |
| "X.java", |
| "abstract class X2 extends A implements I {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " abstract class X2 extends A implements I {}\r\n" + |
| " ^^\n" + |
| "Name clash: The method foo(Class<T>) of type A has the same erasure as foo(Class<T>) of type I but does not override it\n" + |
| "----------\n" |
| // name clash: <T>foo(java.lang.Class<T>) in A and <T,S>foo(java.lang.Class<T>) in I have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A { <T, S> S foo(Class<T> s) { return null; } }\n" + |
| "interface I { <T> Object foo(Class<T> s); }\n", |
| "X.java", |
| "abstract class X3 extends A implements I {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " abstract class X3 extends A implements I {}\r\n" + |
| " ^^\n" + |
| "Name clash: The method foo(Class<T>) of type A has the same erasure as foo(Class<T>) of type I but does not override it\n" + |
| "----------\n" |
| // name clash: <T,S>foo(java.lang.Class<T>) in A and <T>foo(java.lang.Class<T>) in I have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A { <T> Object foo(Class<T> s) { return null; } }\n" + |
| "interface I { <T, S> S foo(Class<T> s); }\n", |
| "X.java", |
| "abstract class X4 extends A implements I {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " abstract class X4 extends A implements I {}\r\n" + |
| " ^^\n" + |
| "Name clash: The method foo(Class<T>) of type A has the same erasure as foo(Class<T>) of type I but does not override it\n" + |
| "----------\n" |
| // name clash: <T>foo(java.lang.Class<T>) in A and <T,S>foo(java.lang.Class<T>) in I have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A { public <T, S> void foo(Class<T> s) {} }\n" + |
| "interface I { <T> void foo(Class<T> s); }\n", |
| |
| "X.java", |
| "class X5 extends A implements I { public <T> void foo(Class<T> s) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " class X5 extends A implements I { public <T> void foo(Class<T> s) {} }\r\n" + |
| " ^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method foo(Class<T>) of type X5 has the same erasure as foo(Class<T>) of type A but does not override it\n" + |
| "----------\n" |
| // name clash: <T>foo(java.lang.Class<T>) in X5 and <T,S>foo(java.lang.Class<T>) in A have the same erasure, yet neither overrides the other |
| ); |
| } |
| |
| public void test014() { // name clash tests |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "class X { void foo(A a) {} }\n" + |
| "class Y extends X { void foo(A a) {} }\n" + |
| "class A<T> {}\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "class X { void foo(A[] a) {} }\n" + |
| "class Y extends X { void foo(A[] a) {} }\n" + |
| "class A<T> {}\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "class X { void foo(A<String>[] a) {} }\n" + |
| "class Y extends X { void foo(A[] a) {} }\n" + |
| "class A<T> {}\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "class X { void foo(A<String> a) {} }\n" + |
| "class Y extends X { void foo(A a) {} }\n" + |
| "class A<T> {}\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "class X { void foo(A a) {} }\n" + |
| "class Y extends X { void foo(A<String> a) {} }\n" + |
| "class A<T> {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\n" + |
| " class Y extends X { void foo(A<String> a) {} }\n" + |
| " ^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method foo(A<String>) of type Y has the same erasure as foo(A) of type X but does not override it\n" + |
| "----------\n" |
| // name clash: foo(A<java.lang.String>) in Y and foo(A) in X have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "class X { void foo(A[] a) {} }\n" + |
| "class Y extends X { void foo(A<String>[] a) {} }\n" + |
| "class A<T> {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\n" + |
| " class Y extends X { void foo(A<String>[] a) {} }\n" + |
| " ^^^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method foo(A<String>[]) of type Y has the same erasure as foo(A[]) of type X but does not override it\n" + |
| "----------\n" |
| // name clash: foo(A<java.lang.String>[]) in Y and foo(A[]) in X have the same erasure, yet neither overrides the other |
| ); |
| } |
| |
| public void test015() { // more name clash tests |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "abstract class X extends Y implements I { }\n" + |
| "interface I { void foo(A a); }\n" + |
| "class Y { public void foo(A a) {} }\n" + |
| "class A<T> {}\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "abstract class X extends Y implements I { }\n" + |
| "interface I { void foo(A[] a); }\n" + |
| "class Y { public void foo(A[] a) {} }\n" + |
| "class A<T> {}\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "abstract class X extends Y implements I { }\n" + |
| "interface I { void foo(A<String>[] a); }\n" + |
| "class Y { public void foo(A[] a) {} }\n" + |
| "class A<T> {}\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "abstract class X extends Y implements I { }\n" + |
| "interface I { void foo(A<String> a); }\n" + |
| "class Y { public void foo(A a) {} }\n" + |
| "class A<T> {}\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "abstract class X extends Y implements I { }\n" + |
| "interface I { void foo(A a); }\n" + |
| "class Y { public void foo(A<String> a) {} }\n" + |
| "class A<T> {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " abstract class X extends Y implements I { }\r\n" + |
| " ^\n" + |
| "Name clash: The method foo(A<String>) of type Y has the same erasure as foo(A) of type I but does not override it\n" + |
| "----------\n" |
| // name clash: foo(A<java.lang.String>) in Y and foo(A) in I have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "abstract class X extends Y implements I { }\n" + |
| "interface I { void foo(A[] a); }\n" + |
| "class Y { public void foo(A<String>[] a) {} }\n" + |
| "class A<T> {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " abstract class X extends Y implements I { }\r\n" + |
| " ^\n" + |
| "Name clash: The method foo(A<String>[]) of type Y has the same erasure as foo(A[]) of type I but does not override it\n" + |
| "----------\n" |
| // name clash: foo(A<java.lang.String>[]) in Y and foo(A[]) in I have the same erasure, yet neither overrides the other |
| ); |
| } |
| |
| public void test016() { // 73971 |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " <E extends A> void m(E e) { System.out.print(\"A=\"+e.getClass()); }\n" + |
| " <E extends B> void m(E e) { System.out.print(\"B=\"+e.getClass()); }\n" + |
| " public static void main(String[] args) {\n" + |
| " new X().m(new A());\n" + |
| " new X().m(new B());\n" + |
| " }\n" + |
| "}\n" + |
| "class A {}\n" + |
| "class B extends A {}\n" |
| }, |
| "A=class AB=class B" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " static <E extends A> void m(E e) { System.out.print(\"A=\"+e.getClass()); }\n" + |
| " static <E extends B> void m(E e) { System.out.print(\"B=\"+e.getClass()); }\n" + |
| " public static void main(String[] args) {\n" + |
| " m(new A());\n" + |
| " m(new B());\n" + |
| " }\n" + |
| "}\n" + |
| "class A {}\n" + |
| "class B extends A {}\n" |
| }, |
| "A=class AB=class B" |
| ); |
| } |
| |
| public void test017() { // 77785 |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "class X<T> {}\n" + |
| "class Y { void test(X<? extends Number> a) {} }\n" + |
| "class Z extends Y { void test(X<Number> a) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 3)\r\n" + |
| " class Z extends Y { void test(X<Number> a) {} }\r\n" + |
| " ^^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method test(X<Number>) of type Z has the same erasure as test(X<? extends Number>) of type Y but does not override it\n" + |
| "----------\n" |
| // name clash: test(X<java.lang.Number>) in Z and test(X<? extends java.lang.Number>) in Y have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "class X<T> {}\n" + |
| "class Y { void test(X<Number> a) {} }\n" + |
| "class Z extends Y { void test(X<? extends Number> a) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 3)\n" + |
| " class Z extends Y { void test(X<? extends Number> a) {} }\n" + |
| " ^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method test(X<? extends Number>) of type Z has the same erasure as test(X<Number>) of type Y but does not override it\n" + |
| "----------\n" |
| // name clash: test(X<? extends java.lang.Number>) in Z and test(X<java.lang.Number>) in Y have the same erasure, yet neither overrides the other |
| ); |
| } |
| |
| public void test018() { // 77861 |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "class X implements Comparable<X> {\n" + |
| " public int compareTo(Object o) { return 0; }\n" + |
| " public int compareTo(X o) { return 1; }\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\n" + |
| " public int compareTo(Object o) { return 0; }\n" + |
| " ^^^^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method compareTo(Object) of type X has the same erasure as compareTo(T) of type Comparable<T> but does not override it\n" + |
| "----------\n" |
| // name clash: compareTo(java.lang.Object) in X and compareTo(T) in java.lang.Comparable<X> have the same erasure, yet neither overrides the other |
| ); |
| } |
| |
| public void test019() { // 78140 |
| this.runConformTest( |
| new String[] { |
| "A.java", |
| "public class A {\n" + |
| " <T> T get() { return null; } \n" + |
| "}\n" + |
| "class B extends A {\n" + |
| " <T> T get() { return null; } \n" + |
| "}\n" |
| }, |
| "" |
| ); |
| } |
| |
| public void test020() { // 78232 |
| this.runConformTest( |
| new String[] { |
| "Test.java", |
| "public class Test {\n" + |
| " public static void main(String[] args) {\n" + |
| " AbstractBase ab = new AbstractBase();\n" + |
| " Derived d = new Derived();\n" + |
| " AbstractBase ab2 = new Derived();\n" + |
| " Visitor<String, String> v = new MyVisitor();\n" + |
| " System.out.print(ab.accept(v, ab.getClass().getName()));\n" + |
| " System.out.print('+');\n" + |
| " System.out.print(d.accept(v, d.getClass().getName()));\n" + |
| " System.out.print('+');\n" + |
| " System.out.print(ab2.accept(v, ab2.getClass().getName()));\n" + |
| " }\n" + |
| " static class MyVisitor implements Visitor<String, String> {\n" + |
| " public String visitBase(AbstractBase ab, String obj) { return \"Visited base: \" + obj; }\n" + |
| " public String visitDerived(Derived d, String obj) { return \"Visited derived: \" + obj; }\n" + |
| " }\n" + |
| "}\n" + |
| "interface Visitor<R, T> {\n" + |
| " R visitBase(AbstractBase ab, T obj);\n" + |
| " R visitDerived(Derived d, T obj);\n" + |
| "}\n" + |
| "interface Visitable {\n" + |
| " <R, T> R accept(Visitor<R, T> v, T obj);\n" + |
| "}\n" + |
| "class AbstractBase implements Visitable {\n" + |
| " public <R, T> R accept(Visitor<R, T> v, T obj) { return v.visitBase(this, obj); }\n" + |
| "}\n" + |
| "class Derived extends AbstractBase implements Visitable {\n" + |
| " public <R, T> R accept(Visitor<R, T> v, T obj) { return v.visitDerived(this, obj); }\n" + |
| "}\n" |
| }, |
| "Visited base: AbstractBase+Visited derived: Derived+Visited derived: Derived" |
| ); |
| } |
| |
| public void test021() { |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "public class A {\n" + |
| " public void foo(java.util.Map<String, Class<?>> m) { } \n" + |
| "}\n", |
| "B.java", |
| "class B extends A {\n" + |
| " @Override void foo(java.util.Map<String, Class<?>> m) { } \n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in B.java (at line 2)\r\n" + |
| " @Override void foo(java.util.Map<String, Class<?>> m) { } \r\n" + |
| " ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" + |
| "Cannot reduce the visibility of the inherited method from A\n" + |
| "----------\n" |
| ); |
| // now save A & pick it up as a binary type |
| this.runConformTest( |
| new String[] { |
| "A.java", |
| "public class A {\n" + |
| " public void foo(java.util.Map<String, Class<?>> m) { } \n" + |
| "}\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "B.java", |
| "class B extends A {\n" + |
| " @Override void foo(java.util.Map<String, Class<?>> m) { } \n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in B.java (at line 2)\r\n" + |
| " @Override void foo(java.util.Map<String, Class<?>> m) { } \r\n" + |
| " ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" + |
| "Cannot reduce the visibility of the inherited method from A\n" + |
| "----------\n", |
| null, |
| false, |
| null |
| ); |
| } |
| |
| public void test022() { // 77562 |
| this.runConformTest( |
| new String[] { |
| "A.java", |
| "import java.util.*;\n" + |
| "class A { List getList() { return null; } }\n" + |
| "class B extends A { @Override List<String> getList() { return null; } }\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "import java.util.*;\n" + |
| "class A { List<String> getList() { return null; } }\n" + |
| "class B extends A { @Override List getList() { return null; } }\n" |
| }, |
| "----------\n" + |
| "1. WARNING in A.java (at line 3)\n" + |
| " class B extends A { @Override List getList() { return null; } }\n" + |
| " ^^^^\n" + |
| "Type safety: The return type List for getList() from the type B needs unchecked conversion to conform to List<String> from the type A\n" + |
| "----------\n" |
| // unchecked warning on B.getList() |
| ); |
| } |
| |
| public void test023() { // 80739 |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A<T> {\n" + |
| " void foo(T t) {}\n" + |
| " void foo(String i) {}\n" + |
| "}\n" + |
| "class B extends A<String> {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in A.java (at line 5)\r\n" + |
| " class B extends A<String> {}\r\n" + |
| " ^\n" + |
| "Duplicate methods named foo with the parameters (String) and (T) are defined by the type A<String>\n" + |
| "----------\n" |
| // methods foo(T) from A<java.lang.String> and foo(java.lang.String) from A<java.lang.String> are inherited with the same signature |
| ); |
| } |
| |
| public void test024() { // 80626 |
| this.runConformTest( |
| new String[] { |
| "A.java", |
| "class A {\n" + |
| " public <E extends Object> void m(E e) {}\n" + |
| "}\n" + |
| "class B extends A {\n" + |
| " public void m(Object e) {}\n" + |
| "}\n" |
| }, |
| "" |
| // no complaint |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A {\n" + |
| " public void m(Object e) {}\n" + |
| "}\n" + |
| "class B extends A {\n" + |
| " public <E extends Object> void m(E e) {}\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in A.java (at line 5)\r\n" + |
| " public <E extends Object> void m(E e) {}\r\n" + |
| " ^^^^^^\n" + |
| "Name clash: The method m(E) of type B has the same erasure as m(Object) of type A but does not override it\n" + |
| "----------\n" |
| // name clash: <E>m(E) in B and m(java.lang.Object) in A have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A {\n" + |
| " public <E extends Object> void m(E e) {}\n" + |
| "}\n" + |
| "class B extends A {\n" + |
| " @Override public void m(Object e) {}\n" + |
| "}\n" + |
| "class C extends B {\n" + |
| " public <E extends Object> void m(E e) {}\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in A.java (at line 8)\r\n" + |
| " public <E extends Object> void m(E e) {}\r\n" + |
| " ^^^^^^\n" + |
| "Name clash: The method m(E) of type C has the same erasure as m(Object) of type B but does not override it\n" + |
| "----------\n" |
| // name clash: <E>m(E) in C and m(java.lang.Object) in B have the same erasure, yet neither overrides the other |
| ); |
| } |
| |
| public void test025() { // 81618 |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " public static void main(String[] args) {\n" + |
| " new B().test();\n" + |
| " }\n" + |
| "}\n" + |
| "class A {\n" + |
| " <T extends Number> T test() { return null; }\n" + |
| "}\n" + |
| "class B extends A {\n" + |
| " @Override Integer test() { return 1; }\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. WARNING in X.java (at line 10)\n" + |
| " @Override Integer test() { return 1; }\n" + |
| " ^^^^^^^\n" + |
| "Type safety: The return type Integer for test() from the type B needs unchecked conversion to conform to T from the type A\n" + |
| "----------\n" |
| // warning: test() in B overrides <T>test() in A; return type requires unchecked conversion |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " public static void main(String[] args) {\n" + |
| " new B().test();\n" + |
| " }\n" + |
| "}\n" + |
| "class A {\n" + |
| " <T extends Number> T[] test() { return null; }\n" + |
| "}\n" + |
| "class B extends A {\n" + |
| " @Override Integer[] test() { return new Integer[] {2}; }\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. WARNING in X.java (at line 10)\n" + |
| " @Override Integer[] test() { return new Integer[] {2}; }\n" + |
| " ^^^^^^^^^\n" + |
| "Type safety: The return type Integer[] for test() from the type B needs unchecked conversion to conform to T[] from the type A\n" + |
| "----------\n" |
| // warning: test() in B overrides <T>test() in A; return type requires unchecked conversion |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " public static void main(String[] args) {\n" + |
| " System.out.println(new B().<Integer>test(new Integer(1)));\n" + |
| " }\n" + |
| "}\n" + |
| "class A {\n" + |
| " <T> T test(T t) { return null; }\n" + |
| "}\n" + |
| "class B extends A {\n" + |
| " @Override <T> T test(T t) { return t; }\n" + |
| "}\n" |
| }, |
| "1" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " public static void main(String[] args) {\n" + |
| " System.out.println(new B().<Number>test(1));\n" + |
| " }\n" + |
| "}\n" + |
| "class A<T> {\n" + |
| " <U> T test(U u) { return null; }\n" + |
| "}\n" + |
| "class B extends A<Integer> {\n" + |
| " @Override <U> Integer test(U u) { return 1; }\n" + |
| "}\n" |
| }, |
| "1" |
| ); |
| this.runConformTest( |
| new String[] { |
| "A.java", |
| "import java.util.concurrent.Callable;\n" + |
| "public class A {\n" + |
| " public static void main(String[] args) throws Exception {\n" + |
| " Callable<Integer> integerCallable = new Callable<Integer>() {\n" + |
| " public Integer call() { return new Integer(1); }\n" + |
| " };\n" + |
| " System.out.println(integerCallable.call());\n" + |
| " }\n" + |
| "}\n" |
| }, |
| "1" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "interface X<T extends X> { T x(); }\n" + |
| "abstract class Y<S extends X> implements X<S> { public abstract S x(); }\n" + |
| "abstract class Z implements X { public abstract X x(); }\n" |
| }, |
| "" // no warnings |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "interface X<T extends X> { T[] x(); }\n" + |
| "abstract class Y<S extends X> implements X<S> { public abstract S[] x(); }\n" + |
| "abstract class Z implements X { public abstract X[] x(); }\n" |
| }, |
| "" // no warnings |
| ); |
| } |
| |
| public void test026() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " public static void main(String[] args) {\n" + |
| " System.out.print(\n" + |
| " new B().test().getClass() + \" & \"\n" + |
| " + new C().test().getClass() + \" & \"\n" + |
| " + new D().test().getClass());\n" + |
| " }\n" + |
| "}\n" + |
| "class A<T extends Number> {\n" + |
| " A<T> test() { return this; }\n" + |
| "}\n" + |
| "class B extends A {\n" + |
| " A test() { return super.test(); }\n" + |
| "}\n" + |
| "class C extends A<Integer> {\n" + |
| " A<Integer> test() { return super.test(); }\n" + |
| "}\n" + |
| "class D<U, V extends Number> extends A<V> {\n" + |
| " A<V> test() { return super.test(); }\n" + |
| "}\n" |
| }, |
| "class B & class C & class D" |
| ); |
| this.runConformTest( |
| new String[] { |
| "A.java", |
| "public abstract class A<E> {\n" + |
| " public abstract A<E> test();\n" + |
| "}\n" + |
| "class H<K,V> {\n" + |
| " class M extends A<K> {\n" + |
| " public A<K> test() { return null; }\n" + |
| " }\n" + |
| "}\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X extends java.util.AbstractMap {\n" + |
| " public java.util.Set entrySet() { return null; }\n" + |
| "}\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " public static void main(String[] args) {\n" + |
| " System.out.print(new C().test().getClass());\n" + |
| " }\n" + |
| "}\n" + |
| "class A<T extends Number> {\n" + |
| " A<T> test() { return this; }\n" + |
| "}\n" + |
| "class C extends A<Integer> {\n" + |
| " @Override A test() { return super.test(); }\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. WARNING in X.java (at line 10)\n" + |
| " @Override A test() { return super.test(); }\n" + |
| " ^\n" + |
| "Type safety: The return type A for test() from the type C needs unchecked conversion to conform to A<T> from the type A<T>\n" + |
| "----------\n" |
| // warning: test() in C overrides test() in A; return type requires unchecked conversion |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=82102 |
| public void test027() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X { <T> void test() {} }\n" + |
| "class Y extends X { void test() {} }\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X { void test() {} }\n" + |
| "class Y extends X { <T> void test() {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\n" + |
| " class Y extends X { <T> void test() {} }\n" + |
| " ^^^^^^\n" + |
| "Name clash: The method test() of type Y has the same erasure as test() of type X but does not override it\n" + |
| "----------\n" |
| // name clash: <T>foo() in Y and foo() in X have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X<T> { void test(T o) {} }\n" + |
| "class Y<T> extends X<T> { void test(Object o) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\r\n" + |
| " class Y<T> extends X<T> { void test(Object o) {} }\r\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Name clash: The method test(Object) of type Y<T> has the same erasure as test(T) of type X<T> but does not override it\n" + |
| "----------\n" |
| // no error unless you try to do a super send which then fails |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X<T> { void test(T o, T t) {} }\n" + |
| "class Y<T> extends X<T> { void test(Object o, T t) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\r\n" + |
| " class Y<T> extends X<T> { void test(Object o, T t) {} }\r\n" + |
| " ^^^^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method test(Object, T) of type Y<T> has the same erasure as test(T, T) of type X<T> but does not override it\n" + |
| "----------\n" |
| // name clash: test(java.lang.Object,T) in Y<T> and test(T,T) in X<T> have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " void test() {\n" + |
| " Pair<Double, Integer> p = new InvertedPair<Integer, Double>();\n" + |
| " p.setA(new Double(1.1));\n" + |
| " }\n" + |
| "}\n" + |
| "class Pair<A, B> {\n" + |
| " public void setA(A a) {}\n" + |
| "}\n" + |
| "class InvertedPair<A, B> extends Pair<B, A> {\n" + |
| " public void setA(A a) {}\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 11)\n" + |
| " public void setA(A a) {}\n" + |
| " ^^^^^^^^^\n" + |
| "Name clash: The method setA(A) of type InvertedPair<A,B> has the same erasure as setA(A) of type Pair<A,B> but does not override it\n" + |
| "----------\n" |
| // name clash: setA(A) in InvertedPair<A,B> and setA(A) in Pair<B,A> have the same erasure, yet neither overrides the other |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=81727 |
| public void test028() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X implements I<X>{\n" + |
| " public X foo() { return null; }\n" + |
| "}\n" + |
| "interface I<T extends I> { T foo(); }\n" |
| }, |
| "" |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=81568 |
| public void test029() { |
| this.runConformTest( |
| new String[] { |
| "I.java", |
| "public interface I {\n" + |
| " public I clone();\n" + |
| "}\n" + |
| "interface J extends I {}\n" |
| }, |
| "" |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=81535 |
| public void test030() { |
| java.util.Map options = super.getCompilerOptions(); |
| options.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_4); |
| |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "import java.io.OutputStreamWriter;\n" + |
| "import java.io.PrintWriter;\n" + |
| "public class X extends PrintWriter implements Runnable {\n" + |
| " public X(OutputStreamWriter out, boolean flag) { super(out, flag); }\n" + |
| " public void run() {}\n" + |
| "}\n" |
| }, |
| "", |
| null, // use default class-path |
| false, // do not flush previous output dir content |
| null, // no special vm args |
| options, |
| null |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=80743 |
| public void test031() { |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "interface X { long hashCode(); }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " interface X { long hashCode(); }\r\n" + |
| " ^^^^^^^^^^\n" + |
| "The return type is incompatible with Object.hashCode()\n" + |
| "----------\n" |
| // hashCode() in X cannot override hashCode() in java.lang.Object; attempting to use incompatible return type |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=80736 |
| public void test032() { |
| // NOTE: javac only reports these errors when the problem type follows the bounds |
| // if the type X is defined first, then no errors are reported |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "interface I { Float foo(); }\n" + |
| "interface J { Integer foo(); }\n" + |
| "public class X<T extends I&J> {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 3)\r\n" + |
| " public class X<T extends I&J> {}\r\n" + |
| " ^\n" + |
| "The return type is incompatible with J.foo(), I.foo()\n" + |
| "----------\n" |
| // types J and I are incompatible; both define foo(), but with unrelated return types |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "interface I { String foo(); }\n" + |
| "class A { public Object foo() { return null; } }" + |
| "public class X<T extends A&I> {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\r\n" + |
| " class A { public Object foo() { return null; } }public class X<T extends A&I> {}\r\n" + |
| " ^\n" + |
| "The return type is incompatible with I.foo(), A.foo()\n" + |
| "----------\n" |
| // foo() in A cannot implement foo() in I; attempting to use incompatible return type |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=80745 |
| public void test033() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "interface I { Number foo(); }\n" + |
| "interface J { Integer foo(); }\n" + |
| "public class X implements I, J {\n" + |
| " public Integer foo() {return 1;}\n" + |
| " public static void main(String argv[]) {\n" + |
| " I i = null;\n" + |
| " J j = null;\n" + |
| " System.out.print(i instanceof J);\n" + |
| " System.out.print('=');\n" + |
| " System.out.print(j instanceof I);\n" + |
| " }\n" + |
| "}\n" |
| }, |
| "false=false" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "interface I { Number foo(A a); }\n" + |
| "interface J<T> { Integer foo(A<T> a); }\n" + |
| "class A<T>{}\n" + |
| "public class X implements I, J {\n" + |
| " public Integer foo(A a) {return 1;}\n" + |
| " public static void main(String argv[]) {\n" + |
| " I i = null;\n" + |
| " J j = null;\n" + |
| " System.out.print(i instanceof J);\n" + |
| " System.out.print('=');\n" + |
| " System.out.print(j instanceof I);\n" + |
| " }\n" + |
| "}\n" |
| }, |
| "false=false" |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=81332 |
| public void test034() { |
| this.runConformTest( |
| new String[] { |
| "B.java", |
| "interface I<E extends Comparable<E>> { void test(E element); }\n" + |
| "class A implements I<Integer> { public void test(Integer i) {} }\n" + |
| "public class B extends A { public void test(String i) {} }\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "B.java", |
| "interface I<E extends Comparable> { void test(E element); }\n" + |
| "class A { public void test(Integer i) {} }\n" + |
| "public class B extends A implements I<Integer> {}\n" + |
| "class C extends B { public void test(Object i) {} }\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "B.java", |
| "interface I<E extends Comparable> { void test(E element); }\n" + |
| "class A { public void test(Integer i) {} }\n" + |
| "public class B extends A implements I<Integer> { public void test(Comparable i) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in B.java (at line 3)\n" + |
| " public class B extends A implements I<Integer> { public void test(Comparable i) {} }\n" + |
| " ^^^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method test(Comparable) of type B has the same erasure as test(E) of type I<E> but does not override it\n" + |
| "----------\n" |
| // name clash: test(java.lang.Comparable) in B and test(E) in I<java.lang.Integer> have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "B.java", |
| "interface I<E extends Comparable<E>> { void test(E element); }\n" + |
| "class A implements I<Integer> { public void test(Integer i) {} }\n" + |
| "public class B extends A { public void test(Comparable i) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in B.java (at line 3)\n" + |
| " public class B extends A { public void test(Comparable i) {} }\n" + |
| " ^^^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method test(Comparable) of type B has the same erasure as test(E) of type I<E> but does not override it\n" + |
| "----------\n" |
| // name clash: test(java.lang.Comparable) in B and test(E) in I<java.lang.Integer> have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "B.java", |
| "abstract class AA<E extends Comparable> { abstract void test(E element); }\n" + |
| "class A extends AA<Integer> { @Override public void test(Integer i) {} }\n" + |
| "public class B extends A { public void test(Comparable i) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in B.java (at line 3)\n" + |
| " public class B extends A { public void test(Comparable i) {} }\n" + |
| " ^^^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method test(Comparable) of type B has the same erasure as test(E) of type AA<E> but does not override it\n" + |
| "----------\n" |
| // name clash: test(java.lang.Comparable) in B and test(E) in AA<java.lang.Integer> have the same erasure, yet neither overrides the other |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=80626 |
| public void test035() { |
| this.runNegativeTest( |
| new String[] { |
| "E.java", |
| "interface I<U>{ int compareTo(U o); }\n" + |
| "abstract class F<T extends F<T>> implements I<T>{ public final int compareTo(T o) { return 0; } }\n" + |
| "public class E extends F<E> { public int compareTo(Object o) { return 0; } }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in E.java (at line 3)\n" + |
| " public class E extends F<E> { public int compareTo(Object o) { return 0; } }\n" + |
| " ^^^^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method compareTo(Object) of type E has the same erasure as compareTo(U) of type I<U> but does not override it\n" + |
| "----------\n" |
| // name clash: compareTo(java.lang.Object) in E and compareTo(U) in I<E> have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public enum X {\n" + |
| " ;\n" + |
| " public int compareTo(Object o) { return 0; }\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 3)\n" + |
| " public int compareTo(Object o) { return 0; }\n" + |
| " ^^^^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method compareTo(Object) of type X has the same erasure as compareTo(T) of type Comparable<T> but does not override it\n" + |
| "----------\n" |
| // name clash: compareTo(java.lang.Object) in X and compareTo(T) in java.lang.Comparable<X> have the same erasure, yet neither overrides the other |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=83162 |
| public void test036() { // 2 interface cases |
| // no bridge methods are created in these conform cases so no name clashes can occur |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "class X implements Equivalent, EqualityComparable {\n" + |
| " public boolean equalTo(Object other) { return true; }\n" + |
| "}\n" + |
| "abstract class Y implements Equivalent, EqualityComparable {}\n" + |
| "class Z extends Y {\n" + |
| " public boolean equalTo(Object other) { return true; }\n" + |
| "}\n" + |
| "interface Equivalent<T> { boolean equalTo(T other); }\n" + |
| "interface EqualityComparable<T> { boolean equalTo(T other); }\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "class X implements Equivalent, EqualityComparable {\n" + |
| " public boolean equalTo(Comparable other) { return true; }\n" + |
| " public boolean equalTo(Number other) { return true; }\n" + |
| "}\n" + |
| "abstract class Y implements Equivalent, EqualityComparable {}\n" + |
| "class Z extends Y {\n" + |
| " public boolean equalTo(Comparable other) { return true; }\n" + |
| " public boolean equalTo(Number other) { return true; }\n" + |
| "}\n" + |
| "interface Equivalent<T extends Comparable> { boolean equalTo(T other); }\n" + |
| "interface EqualityComparable<T extends Number> { boolean equalTo(T other); }\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "class X<S> implements Equivalent<S>, EqualityComparable<S> {\n" + |
| " public boolean equalTo(S other) { return true; }\n" + |
| "}\n" + |
| "abstract class Y<S> implements Equivalent<S>, EqualityComparable<S> {}\n" + |
| "class Z<U> extends Y<U> {\n" + |
| " public boolean equalTo(U other) { return true; }\n" + |
| "}\n" + |
| "interface Equivalent<T> { boolean equalTo(T other); }\n" + |
| "interface EqualityComparable<T> { boolean equalTo(T other); }\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "class X<T extends Comparable, S extends Number> implements Equivalent<T>, EqualityComparable<S> {\n" + |
| " public boolean equalTo(T other) { return true; }\n" + |
| " public boolean equalTo(S other) { return true; }\n" + |
| "}\n" + |
| "abstract class Y<T extends Comparable, S extends Number> implements Equivalent<T>, EqualityComparable<S> {}\n" + |
| "class Z<U extends Comparable, V extends Number> extends Y<U, V> {\n" + |
| " public boolean equalTo(U other) { return true; }\n" + |
| " public boolean equalTo(V other) { return true; }\n" + |
| "}\n" + |
| "interface Equivalent<T extends Comparable> { boolean equalTo(T other); }\n" + |
| "interface EqualityComparable<S extends Number> { boolean equalTo(S other); }\n" |
| }, |
| "" |
| ); |
| |
| // in these cases, bridge methods are needed once abstract/concrete methods are defiined (either in the abstract class or a concrete subclass) |
| this.runConformTest( |
| new String[] { |
| "Y.java", |
| "abstract class Y implements Equivalent<String>, EqualityComparable<Integer> {\n" + |
| " public abstract boolean equalTo(Number other);\n" + |
| "}\n" + |
| "interface Equivalent<T> { boolean equalTo(T other); }\n" + |
| "interface EqualityComparable<T> { boolean equalTo(T other); }\n" |
| }, |
| "" |
| // no bridge methods are created here since Y does not define an equalTo(?) method which equals an inherited equalTo method |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "Y.java", |
| "abstract class Y implements Equivalent<String>, EqualityComparable<Integer> {\n" + |
| " public abstract boolean equalTo(Object other);\n" + |
| "}\n" + |
| "interface Equivalent<T> { boolean equalTo(T other); }\n" + |
| "interface EqualityComparable<T> { boolean equalTo(T other); }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in Y.java (at line 2)\n" + |
| " public abstract boolean equalTo(Object other);\n" + |
| " ^^^^^^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method equalTo(Object) of type Y has the same erasure as equalTo(T) of type Equivalent<T> but does not override it\n" + |
| "----------\n" + |
| "2. ERROR in Y.java (at line 2)\n" + |
| " public abstract boolean equalTo(Object other);\n" + |
| " ^^^^^^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method equalTo(Object) of type Y has the same erasure as equalTo(T) of type EqualityComparable<T> but does not override it\n" + |
| "----------\n" |
| // name clash: equalTo(java.lang.Object) in Y and equalTo(T) in Equivalent<java.lang.String> have the same erasure, yet neither overrides the other |
| ); |
| // NOTE: javac has a bug, reverse the implemented interfaces & the name clash goes away |
| // but eventually when a concrete subclass must define the remaining method, the error shows up |
| this.runNegativeTest( |
| new String[] { |
| "Y.java", |
| "abstract class Y implements Equivalent<String>, EqualityComparable<Integer> {\n" + |
| " public abstract boolean equalTo(String other);\n" + |
| "}\n" + |
| "interface Equivalent<T> { boolean equalTo(T other); }\n" + |
| "interface EqualityComparable<T> { boolean equalTo(T other); }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in Y.java (at line 1)\n" + |
| " abstract class Y implements Equivalent<String>, EqualityComparable<Integer> {\n" + |
| " ^\n" + |
| "Name clash: The method equalTo(T) of type Equivalent<T> has the same erasure as equalTo(T) of type EqualityComparable<T> but does not override it\n" + |
| "----------\n" |
| // name clash: equalTo(T) in Equivalent<java.lang.String> and equalTo(T) in EqualityComparable<java.lang.Integer> have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "Y.java", |
| "abstract class Y implements EqualityComparable<Integer>, Equivalent<String> {\n" + |
| " public boolean equalTo(Integer other) { return true; }\n" + |
| "}\n" + |
| "interface Equivalent<T> { boolean equalTo(T other); }\n" + |
| "interface EqualityComparable<T> { boolean equalTo(T other); }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in Y.java (at line 1)\n" + |
| " abstract class Y implements EqualityComparable<Integer>, Equivalent<String> {\n" + |
| " ^\n" + |
| "Name clash: The method equalTo(T) of type EqualityComparable<T> has the same erasure as equalTo(T) of type Equivalent<T> but does not override it\n" + |
| "----------\n" |
| // name clash: equalTo(T) in EqualityComparable<java.lang.Integer> and equalTo(T) in Equivalent<java.lang.String> have the same erasure, yet neither overrides the other |
| ); |
| } |
| |
| public void test037() { // test inheritance scenarios |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public abstract class X implements I, J { }\n" + |
| "abstract class Y implements J, I { }\n" + |
| "abstract class Z implements K { }\n" + |
| |
| "class YYY implements J, I { public void foo(A a) {} }\n" + |
| "class XXX implements I, J { public void foo(A a) {} }\n" + |
| "class ZZZ implements K { public void foo(A a) {} }\n" + |
| |
| "interface I { void foo(A a); }\n" + |
| "interface J { void foo(A<String> a); }\n" + |
| "interface K extends I { void foo(A<String> a); }\n" + |
| "class A<T> {}" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "XX.java", |
| "public abstract class XX implements I, J { public abstract void foo(A<String> a); }\n" + |
| "interface I { void foo(A a); }\n" + |
| "interface J { void foo(A<String> a); }\n" + |
| "class A<T> {}" |
| }, |
| "----------\n" + |
| "1. ERROR in XX.java (at line 1)\r\n" + |
| " public abstract class XX implements I, J { public abstract void foo(A<String> a); }\r\n" + |
| " ^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method foo(A<String>) of type XX has the same erasure as foo(A) of type I but does not override it\n" + |
| "----------\n" |
| // name clash: foo(A<java.lang.String>) in XX and foo(A) in I have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "XX.java", |
| "public class XX implements I, J { public void foo(A<String> a) {} }\n" + |
| "class YY implements J, I { public void foo(A<String> a) {} }\n" + |
| "class ZZ implements K { public void foo(A<String> a) {} }\n" + |
| |
| "interface I { void foo(A a); }\n" + |
| "interface J { void foo(A<String> a); }\n" + |
| "interface K extends I { void foo(A<String> a); }\n" + |
| "class A<T> {}" |
| }, |
| "----------\n" + |
| "1. ERROR in XX.java (at line 1)\n" + |
| " public class XX implements I, J { public void foo(A<String> a) {} }\n" + |
| " ^^\n" + |
| "The type XX must implement the inherited abstract method I.foo(A)\n" + |
| "----------\n" + |
| "2. ERROR in XX.java (at line 1)\n" + |
| " public class XX implements I, J { public void foo(A<String> a) {} }\n" + |
| " ^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method foo(A<String>) of type XX has the same erasure as foo(A) of type I but does not override it\n" + |
| "----------\n" + |
| "3. ERROR in XX.java (at line 2)\n" + |
| " class YY implements J, I { public void foo(A<String> a) {} }\n" + |
| " ^^\n" + |
| "The type YY must implement the inherited abstract method I.foo(A)\n" + |
| "----------\n" + |
| "4. ERROR in XX.java (at line 2)\n" + |
| " class YY implements J, I { public void foo(A<String> a) {} }\n" + |
| " ^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method foo(A<String>) of type YY has the same erasure as foo(A) of type I but does not override it\n" + |
| "----------\n" + |
| "5. ERROR in XX.java (at line 3)\n" + |
| " class ZZ implements K { public void foo(A<String> a) {} }\n" + |
| " ^^\n" + |
| "The type ZZ must implement the inherited abstract method I.foo(A)\n" + |
| "----------\n" + |
| "6. ERROR in XX.java (at line 3)\n" + |
| " class ZZ implements K { public void foo(A<String> a) {} }\n" + |
| " ^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method foo(A<String>) of type ZZ has the same erasure as foo(A) of type I but does not override it\n" + |
| "----------\n" |
| // XX/YY/ZZ is not abstract and does not override abstract method foo(A) in I |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public abstract class X extends Y implements I { }\n" + |
| "interface I { void foo(A a); }\n" + |
| "class Y { void foo(A<String> a) {} }\n" + |
| "class A<T> {}" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " public abstract class X extends Y implements I { }\r\n" + |
| " ^\n" + |
| "Name clash: The method foo(A<String>) of type Y has the same erasure as foo(A) of type I but does not override it\n" + |
| "----------\n" |
| // name clash: foo(A<java.lang.String>) in Y and foo(A) in I have the same erasure, yet neither overrides the other |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public abstract class X extends Y implements I { }\n" + |
| "interface I { void foo(A<String> a); }\n" + |
| "class Y { void foo(A a) {} }\n" + |
| "class A<T> {}" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " public abstract class X extends Y implements I { }\r\n" + |
| " ^\n" + |
| "The inherited method Y.foo(A) cannot hide the public abstract method in I\n" + |
| "----------\n" |
| // foo(A) in Y cannot implement foo(A<java.lang.String>) in I; attempting to assign weaker access privileges; was public |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public abstract class X extends Y implements I { }\n" + |
| "interface I { <T, S> void foo(T t); }\n" + |
| "class Y { <T> void foo(T t) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " public abstract class X extends Y implements I { }\r\n" + |
| " ^\n" + |
| "Name clash: The method foo(T) of type Y has the same erasure as foo(T) of type I but does not override it\n" + |
| "----------\n" |
| // name clash: <T>foo(T) in Y and <T,S>foo(T) in I have the same erasure, yet neither overrides the other |
| ); |
| } |
| |
| public void test038() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X extends H<Object> { void foo(A<?> a) { super.foo(a); } }\n" + |
| "class H<T extends Object> { void foo(A<? extends T> a) {} }\n" + |
| "class A<T> {}" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X extends H<Number> { void foo(A<?> a) {} }\n" + |
| "class H<T extends Number> { void foo(A<? extends T> a) {} }\n" + |
| "class A<T> {}" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " public class X extends H<Number> { void foo(A<?> a) {} }\r\n" + |
| " ^^^^^^^^^^^\n" + |
| "Name clash: The method foo(A<?>) of type X has the same erasure as foo(A<? extends T>) of type H<T> but does not override it\n" + |
| "----------\n" |
| // name clash: foo(A<?>) in X and foo(A<? extends T>) in H<java.lang.Number> have the same erasure, yet neither overrides the other |
| // with public class X extends H<Number> { void foo(A<?> a) { super.foo(a); } } |
| // foo(A<? extends java.lang.Number>) in H<java.lang.Number> cannot be applied to (A<capture of ?>) |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=83573 |
| public void test039() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " public static void main(String[] args) {\n" + |
| " Test test = new Test();\n" + |
| " This test2 = new Test();\n" + |
| " System.out.println(test.get());\n" + |
| " }\n" + |
| " interface This {\n" + |
| " public Object get();\n" + |
| " }\n" + |
| " \n" + |
| " interface That extends This {\n" + |
| " public String get();\n" + |
| " \n" + |
| " }\n" + |
| " \n" + |
| " static class Test implements That {\n" + |
| " \n" + |
| " public String get() {\n" + |
| " return \"That\";\n" + |
| " \n" + |
| " }\n" + |
| " }\n" + |
| "}\n" |
| }, |
| "That" |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=83218 |
| public void test040() { |
| this.runNegativeTest( |
| new String[] { |
| "Base.java", |
| "interface Base<E> { Base<E> proc(); }\n" + |
| "abstract class Derived<D> implements Base<D> { public abstract Derived<D> proc(); }\n" |
| }, |
| "" // no warnings |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "class A { <T extends Number> T test() { return null; } }\n" + |
| "class B extends A { @Override Integer test() { return 1; } }\n" |
| }, |
| "----------\n" + |
| "1. WARNING in A.java (at line 2)\n" + |
| " class B extends A { @Override Integer test() { return 1; } }\n" + |
| " ^^^^^^^\n" + |
| "Type safety: The return type Integer for test() from the type B needs unchecked conversion to conform to T from the type A\n" + |
| "----------\n" |
| // warning: test() in B overrides <T>test() in A; return type requires unchecked conversion |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "import java.util.*;\n" + |
| "class A { List<String> getList() { return null; } }\n" + |
| "class B extends A { @Override List getList() { return null; } }\n" |
| }, |
| "----------\n" + |
| "1. WARNING in A.java (at line 3)\n" + |
| " class B extends A { @Override List getList() { return null; } }\n" + |
| " ^^^^\n" + |
| "Type safety: The return type List for getList() from the type B needs unchecked conversion to conform to List<String> from the type A\n" + |
| "----------\n" |
| // unchecked warning on B.getList() |
| ); |
| |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "interface X<T> { X<T> x(); }\n" + |
| "abstract class Y<S> implements X<S> { public abstract X x(); }\n" + // warning: x() in Y implements x() in X; return type requires unchecked conversion |
| "abstract class Z implements X { public abstract X x(); }\n" |
| }, |
| "----------\n" + |
| "1. WARNING in X.java (at line 2)\n" + |
| " abstract class Y<S> implements X<S> { public abstract X x(); }\n" + |
| " ^\n" + |
| "Type safety: The return type X for x() from the type Y<S> needs unchecked conversion to conform to X<T> from the type X<T>\n" + |
| "----------\n" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "interface X<T> { X<T>[] x(); }\n" + |
| "abstract class Y<S> implements X<S> { public abstract X[] x(); }\n" + // warning: x() in Y implements x() in X; return type requires unchecked conversion |
| "abstract class Z implements X { public abstract X[] x(); }\n" |
| }, |
| "----------\n" + |
| "1. WARNING in X.java (at line 2)\n" + |
| " abstract class Y<S> implements X<S> { public abstract X[] x(); }\n" + |
| " ^^^\n" + |
| "Type safety: The return type X[] for x() from the type Y<S> needs unchecked conversion to conform to X<T>[] from the type X<T>\n" + |
| "----------\n" |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=83902 |
| public void test041() { // inherited cases for bridge methods, varargs clashes, return type conversion checks |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X { public void foo(String... n) {} }\n" + |
| "interface I { void foo(String[] n); }\n" + |
| "class Y extends X implements I { }\n" |
| }, |
| "----------\n" + |
| "1. WARNING in X.java (at line 3)\n" + |
| " class Y extends X implements I { }\n" + |
| " ^\n" + |
| "Varargs methods should only override other varargs methods unlike X.foo(String...) and I.foo(String[])\n" + |
| "----------\n" |
| // warning: foo(java.lang.String...) in X cannot implement foo(java.lang.String[]) in I; overridden method has no '...' |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X { public void foo(String[] n) {} }\n" + |
| "interface I { void foo(String... n); }\n" + |
| "class Y extends X implements I { }\n" |
| }, |
| "----------\n" + |
| "1. WARNING in X.java (at line 3)\n" + |
| " class Y extends X implements I { }\n" + |
| " ^\n" + |
| "Varargs methods should only override other varargs methods unlike X.foo(String[]) and I.foo(String...)\n" + |
| "----------\n" |
| // warning: foo(java.lang.String[]) in X cannot implement foo(java.lang.String...) in I; overriding method is missing '...' |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " public Y foo() {\n" + |
| " System.out.println(\"SUCCESS\");\n" + |
| " return null;\n" + |
| " }\n" + |
| " public static void main(String[] args) {\n" + |
| " ((I) new Y()).foo();\n" + |
| " }\n" + |
| "}\n" + |
| "interface I { X foo(); }\n" + |
| "class Y extends X implements I { }\n" |
| }, |
| "SUCCESS" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X { public A foo() { return null; } }\n" + |
| "interface I { A<String> foo(); }\n" + |
| "class Y extends X implements I { }\n" + |
| "class A<T> { }\n" |
| }, |
| "----------\n" + |
| "1. WARNING in X.java (at line 3)\n" + |
| " class Y extends X implements I { }\n" + |
| " ^\n" + |
| "Type safety: The return type A for foo() from the type X needs unchecked conversion to conform to A<String> from the type I\n" + |
| "----------\n" |
| // warning: foo() in X implements foo() in I; return type requires unchecked conversion |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X { public Object foo() { return null; } }\n" + |
| "interface I { <T> T foo(); }\n" + |
| "class Y extends X implements I { }\n" |
| }, |
| "----------\n" + |
| "1. WARNING in X.java (at line 3)\n" + |
| " class Y extends X implements I { }\n" + |
| " ^\n" + |
| "Type safety: The return type Object for foo() from the type X needs unchecked conversion to conform to T from the type I\n" + |
| "----------\n" |
| // NOTE: javac issues an error & a warning which contradict each other |
| // if the method Object foo() is implemented in Y then only the warning is issued, so X should be allowed to implement the method |
| // Y is not abstract and does not override abstract method <T>foo() in I |
| // warning: foo() in X implements <T>foo() in I; return type requires unchecked conversion |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=85930 |
| public void test042() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "interface Callable<T>\n" + |
| "{\n" + |
| " public enum Result { GOOD, BAD };\n" + |
| " public Result call(T arg);\n" + |
| "}\n" + |
| "\n" + |
| "public class X implements Callable<String>\n" + |
| "{\n" + |
| " public Result call(String arg) { return Result.GOOD; } // Warning line\n" + |
| "}\n" |
| }, |
| "" |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=72704 |
| public void test043() { // ambiguous message sends because of substitution from 2 different type variables |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X { void test(E<Integer,Integer> e) { e.id(new Integer(1)); } }\n" + |
| "abstract class C<A> { public abstract void id(A x); }\n" + |
| "interface I<B> { void id(B x); }\n" + |
| "abstract class E<A, B> extends C<A> implements I<B> {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\n" + |
| " public class X { void test(E<Integer,Integer> e) { e.id(new Integer(1)); } }\n" + |
| " ^^\n" + |
| "The method id(Integer) is ambiguous for the type E<Integer,Integer>\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 4)\n" + |
| " abstract class E<A, B> extends C<A> implements I<B> {}\n" + |
| " ^\n" + |
| "Name clash: The method id(A) of type C<A> has the same erasure as id(B) of type I<B> but does not override it\n" + |
| "----------\n" |
| // javac won't report it until C.id() is made concrete or implemented in E |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X { void test(E<Integer,Integer> e) { e.id(new Integer(2)); } }\n" + |
| "abstract class C<A extends Number> { public abstract void id(A x); }\n" + |
| "interface I<B> { void id(B x); }\n" + |
| "abstract class E<A extends Number, B> extends C<A> implements I<B> {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " public class X { void test(E<Integer,Integer> e) { e.id(new Integer(2)); } }\r\n" + |
| " ^^\n" + |
| "The method id(Integer) is ambiguous for the type E<Integer,Integer>\n" + |
| "----------\n" |
| // reference to id is ambiguous, both method id(A) in C<java.lang.Integer> and method id(B) in I<java.lang.Integer> match |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X { void test(E<Integer,Integer> e) { e.id(new Integer(111)); } }\n" + |
| "abstract class C<A extends Number> { public void id(A x) {} }\n" + |
| "interface I<B> { void id(B x); }\n" + |
| "class E<A extends Number, B> extends C<A> implements I<B> { public void id(B b) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " public class X { void test(E<Integer,Integer> e) { e.id(new Integer(111)); } }\r\n" + |
| " ^^\n" + |
| "The method id(Integer) is ambiguous for the type E<Integer,Integer>\n" + |
| "----------\n" |
| // reference to id is ambiguous, both method id(A) in C<java.lang.Integer> and method id(B) in E<java.lang.Integer,java.lang.Integer> match |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " void test(E<Integer,Integer> e) { e.id(new Integer(111)); }\n" + |
| " void test(M<Integer,Integer> m) {\n" + |
| " m.id(new Integer(111));\n" + |
| " ((E<Integer, Integer>) m).id(new Integer(111));\n" + |
| " }\n" + |
| " void test(N<Integer> n) { n.id(new Integer(111)); }\n" + |
| "}\n" + |
| "abstract class C<A extends Number> { public void id(A x) {} }\n" + |
| "interface I<B> { void id(B x); }\n" + |
| "abstract class E<A extends Number, B> extends C<A> implements I<B> {}\n" + |
| "class M<A extends Number, B> extends E<A, B> { public void id(B b) {} }\n" + |
| "abstract class N<T extends Number> extends E<T, Number> { @Override public void id(T n) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 4)\r\n" + |
| " m.id(new Integer(111));\r\n" + |
| " ^^\n" + |
| "The method id(Integer) is ambiguous for the type M<Integer,Integer>\n" + |
| "----------\n" |
| // reference to id is ambiguous, both method id(A) in C<java.lang.Integer> and method id(B) in M<java.lang.Integer,java.lang.Integer> match |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=97161 |
| public void test043a() { |
| this.runNegativeTest( |
| new String[] { |
| "p/X.java", |
| "package p;\n" + |
| "import static p.Y.*;\n" + |
| "import static p.Z.*;\n" + |
| "public class X {\n" + |
| " Y data = null;\n" + |
| " public X() { foo(data.l); }\n" + |
| "}\n", |
| "p/Y.java", |
| "package p;\n" + |
| "import java.util.List;\n" + |
| "public class Y {\n" + |
| " List l = null;\n" + |
| " public static <T> void foo(T... e) {}\n" + |
| "}\n", |
| "p/Z.java", |
| "package p;\n" + |
| "import java.util.List;\n" + |
| "public class Z {\n" + |
| " public static <T> void foo(List<T>... e) {}\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. WARNING in p\\X.java (at line 6)\n" + |
| " public X() { foo(data.l); }\n" + |
| " ^^^^^^^^^^^\n" + |
| "Type safety: Unchecked invocation foo(List...) of the generic method foo(List<T>...) of type Z\n" + |
| "----------\n" + |
| "2. WARNING in p\\X.java (at line 6)\n" + |
| " public X() { foo(data.l); }\n" + |
| " ^^^^^^\n" + |
| "Type safety: The expression of type List needs unchecked conversion to conform to List<T>\n" + |
| "----------\n" |
| // unchecked conversion warnings |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "p/X.java", |
| "package p;\n" + |
| "import static p.Y.*;\n" + |
| "public class X {\n" + |
| " Y data = null;\n" + |
| " public X() { foo(data.l); }\n" + |
| "}\n", |
| "p/Y.java", |
| "package p;\n" + |
| "import java.util.List;\n" + |
| "public class Y {\n" + |
| " List l = null;\n" + |
| " public static <T> void foo(T... e) {}\n" + |
| " public static <T> void foo(List<T>... e) {}\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. WARNING in p\\X.java (at line 5)\n" + |
| " public X() { foo(data.l); }\n" + |
| " ^^^^^^^^^^^\n" + |
| "Type safety: Unchecked invocation foo(List...) of the generic method foo(List<T>...) of type Y\n" + |
| "----------\n" + |
| "2. WARNING in p\\X.java (at line 5)\n" + |
| " public X() { foo(data.l); }\n" + |
| " ^^^^^^\n" + |
| "Type safety: The expression of type List needs unchecked conversion to conform to List<T>\n" + |
| "----------\n" |
| // unchecked conversion warnings |
| ); |
| } |
| |
| public void test043b() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " void test(M<Integer,Integer> m) {\n" + |
| " m.id(new Integer(111), new Integer(112));\n" + |
| " }\n" + |
| "}\n" + |
| "abstract class C<T1 extends Number> { public <U1 extends Number> void id(T1 x, U1 u) {} }\n" + |
| "interface I<T2> { }\n" + |
| "abstract class E<T3 extends Number, T4> extends C<T3> implements I<T4> {}\n" + |
| "class M<T5 extends Number, T6> extends E<T5, T6> { public <U2 extends Number> void id(T5 b, U2 u) {} }\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " void test(M<Integer,Integer> m) {\n" + |
| " m.id(new Integer(111));\n" + |
| " }\n" + |
| "}\n" + |
| "abstract class C<T1 extends Number> { public void id(T1 x) {} }\n" + |
| "interface I<T2> { void id(T2 x); }\n" + |
| "abstract class E<T3 extends Number, T4> extends C<T3> implements I<T4> {}\n" + |
| "class M<T5 extends Number, T6> extends E<T5, T6> { public void id(T6 b) {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 3)\n" + |
| " m.id(new Integer(111));\n" + |
| " ^^\n" + |
| "The method id(Integer) is ambiguous for the type M<Integer,Integer>\n" + |
| "----------\n" |
| // reference to id is ambiguous, both method id(A) in C<java.lang.Integer> and method id(B) in M<java.lang.Integer,java.lang.Integer> match |
| ); |
| } |
| |
| // ensure AccOverriding remains when attempting to override final method |
| public void test044() { |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X { final void foo() {} }\n" + |
| "class XS extends X { @Override void foo() {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\n" + |
| " class XS extends X { @Override void foo() {} }\n" + |
| " ^^^^^\n" + |
| "Cannot override the final method from X\n" + |
| "----------\n" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X { public void foo() {} }\n" + |
| "class XS extends X { @Override void foo() {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\n" + |
| " class XS extends X { @Override void foo() {} }\n" + |
| " ^^^^^\n" + |
| "Cannot reduce the visibility of the inherited method from X\n" + |
| "----------\n" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X { void foo() {} }\n" + |
| "class XS extends X { @Override void foo() throws ClassNotFoundException {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\n" + |
| " class XS extends X { @Override void foo() throws ClassNotFoundException {} }\n" + |
| " ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" + |
| "Exception ClassNotFoundException is not compatible with throws clause in X.foo()\n" + |
| "----------\n" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X { void foo() {} }\n" + |
| "class XS extends X { @Override int foo() {} }\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\n" + |
| " class XS extends X { @Override int foo() {} }\n" + |
| " ^^^^^\n" + |
| "The return type is incompatible with X.foo()\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 2)\n" + |
| " class XS extends X { @Override int foo() {} }\n" + |
| " ^^^^^\n" + |
| "The method foo() of type XS must override a superclass method\n" + |
| "----------\n" |
| ); |
| } |
| |
| public void test045() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "class Foo {}\n" + |
| "\n" + |
| "interface Bar {\n" + |
| " Foo get(Class<?> c);\n" + |
| "}\n" + |
| "public class X implements Bar {\n" + |
| " public Foo get(Class c) { return null; }\n" + |
| "}\n" |
| }, |
| "" |
| ); |
| } |
| |
| // ensure no unchecked warning |
| public void test046() { |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "interface IX <T> {\n" + |
| " public T doSomething();\n" + |
| "}\n" + |
| "public class X implements IX<Integer> {\n" + |
| " Zork z;\n" + |
| " public Integer doSomething() {\n" + |
| " return null;\n" + |
| " }\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 5)\n" + |
| " Zork z;\n" + |
| " ^^^^\n" + |
| "Zork cannot be resolved to a type\n" + |
| "----------\n"); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=87157 |
| public void test047() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "interface Interface {\n" + |
| " Number getValue();\n" + |
| "}\n" + |
| "class C1 {\n" + |
| " public Double getValue() {\n" + |
| " return 0.0;\n" + |
| " }\n" + |
| "}\n" + |
| "public class X extends C1 implements Interface{\n" + |
| " public static void main(String[] args) {\n" + |
| " Interface i=new X();\n" + |
| " System.out.println(i.getValue());\n" + |
| " }\n" + |
| "}\n" |
| }, |
| "0.0"); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=85900 |
| public void test048() { |
| this.runConformTest( |
| new String[] { |
| "X1.java", |
| "import java.util.*;\n" + |
| "public class X1 extends LinkedHashMap<String, String> {\n" + |
| " public Object putAll(Map<String,String> a) { return null; }\n" + |
| "}\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X2.java", |
| "public class X2 extends Y<String> {\n" + |
| " public Object foo(I<String> z) { return null; }\n" + |
| "}\n" + |
| "class Y<T> implements I<T> {\n" + |
| " public void foo(I<? extends T> a) {}\n" + |
| "}\n" + |
| "interface I<T> {\n" + |
| " public void foo(I<? extends T> a);\n" + |
| "}\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X3.java", |
| "public class X3 extends Y<String> {\n" + |
| " public void foo(I<String> z) {}\n" + |
| "}\n" + |
| "class Y<T> implements I<T> {\n" + |
| " public void foo(I<? extends T> a) {}\n" + |
| "}\n" + |
| "interface I<T> {\n" + |
| " public void foo(I<? extends T> a);\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X3.java (at line 2)\r\n" + |
| " public void foo(I<String> z) {}\r\n" + |
| " ^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method foo(I<String>) of type X3 has the same erasure as foo(I<? extends T>) of type Y<T> but does not override it\n" + |
| "----------\n" |
| // name clash: foo(I<java.lang.String>) in X and foo(I<? extends T>) in Y<java.lang.String> have the same erasure, yet neither overrides the other |
| ); |
| this.runConformTest( |
| new String[] { |
| "X4.java", |
| "public class X4 extends Y<String> {\n" + |
| " public String foo(I<String> z) { return null; }\n" + |
| "}\n" + |
| "class Y<T> implements I<T> {\n" + |
| " public Object foo(I<? extends T> a) { return null; }\n" + |
| "}\n" + |
| "interface I<T> {\n" + |
| " public Object foo(I<? extends T> a);\n" + |
| "}\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X5.java", |
| "public class X5 extends Y<String> {\n" + |
| " public Object foo(I<String> z) { return null; }\n" + |
| "}\n" + |
| "class Y<T> implements I<T> {\n" + |
| " public String foo(I<? extends T> a) { return null; }\n" + |
| "}\n" + |
| "interface I<T> {\n" + |
| " public String foo(I<? extends T> a);\n" + |
| "}\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X6.java", |
| "public class X6 extends Y<String> {\n" + |
| " public void foo(I<String> z) {}\n" + |
| "}\n" + |
| "class Y<T> implements I<T> {\n" + |
| " public Object foo(I<? extends T> a) { return null; }\n" + |
| "}\n" + |
| "interface I<T> {\n" + |
| " public Object foo(I<? extends T> a);\n" + |
| "}\n" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "X7.java", |
| "public class X7 extends Y<String> {\n" + |
| " public String foo(I<String> z) { return null; }\n" + |
| "}\n" + |
| "class Y<T> implements I<T> {\n" + |
| " public T foo(I<? extends T> a) { return null; }\n" + |
| "}\n" + |
| "interface I<T> {\n" + |
| " public T foo(I<? extends T> a);\n" + |
| "}\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X8.java", |
| "public class X8 extends Y<String> {\n" + |
| " public Object foo(I<String> z) { return null; }\n" + |
| "}\n" + |
| "class Y<T> implements I<T> {\n" + |
| " public T foo(I<? extends T> a) { return null; }\n" + |
| "}\n" + |
| "interface I<T> {\n" + |
| " public T foo(I<? extends T> a);\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X8.java (at line 2)\r\n" + |
| " public Object foo(I<String> z) { return null; }\r\n" + |
| " ^^^^^^^^^^^^^^^^\n" + |
| "Name clash: The method foo(I<String>) of type X8 has the same erasure as foo(I<? extends T>) of type Y<T> but does not override it\n" + |
| "----------\n" |
| // name clash: foo(I<java.lang.String>) in X7 and foo(I<? extends T>) in Y<java.lang.String> have the same erasure, yet neither overrides the other |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=88094 |
| public void test049() { |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X<T> {\n" + |
| " T id(T x) { return x; }\n" + |
| " A id(A x) { return x; }\n" + |
| "}\n" + |
| "class Y<T extends A> extends X<T> {\n" + |
| " @Override T id(T x) { return x; }\n" + |
| " @Override A id(A x) { return x; }\n" + |
| "}\n" + |
| "class A {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 5)\n" + |
| " class Y<T extends A> extends X<T> {\n" + |
| " ^\n" + |
| "Name clash: The method id(A) of type X<T> has the same erasure as id(T) of type X<T> but does not override it\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 6)\n" + |
| " @Override T id(T x) { return x; }\n" + |
| " ^^^^^^^\n" + |
| "Method id(T) has the same erasure id(A) as another method in type Y<T>\n" + |
| "----------\n" + |
| "3. ERROR in X.java (at line 7)\n" + |
| " @Override A id(A x) { return x; }\n" + |
| " ^^^^^^^\n" + |
| "Duplicate method id(A) in type Y<T>\n" + |
| "----------\n" |
| // id(T) is already defined in Y |
| // id(java.lang.String) in Y overrides id(T) in X; return type requires unchecked conversion |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=94754 |
| public void test050() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " public static <S extends A> S foo() { System.out.print(\"A\"); return null; }\n" + |
| " public static <N extends B> N foo() { System.out.print(\"B\"); return null; }\n" + |
| " public static void main(String[] args) {\n" + |
| " X.<A>foo();\n" + |
| " X.<B>foo();\n" + |
| " new X().<B>foo();\n" + |
| " }\n" + |
| "}\n" + |
| "class A {}\n" + |
| "class B {}\n" |
| }, |
| "ABB" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " public static <S extends A> void foo() { System.out.print(\"A\"); }\n" + |
| " public static <N extends B> N foo() { System.out.print(\"B\"); return null; }\n" + |
| " static void test () {\n" + |
| " X.foo();\n" + |
| " foo();\n" + |
| " }\n" + |
| "}\n" + |
| "class A {}\n" + |
| "class B {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 5)\r\n" + |
| " X.foo();\r\n" + |
| " ^^^\n" + |
| "The method foo() is ambiguous for the type X\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 6)\r\n" + |
| " foo();\r\n" + |
| " ^^^\n" + |
| "The method foo() is ambiguous for the type X\n" + |
| "----------\n" |
| // both references are ambiguous |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=90423 - variation |
| public void test050a() { |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " class C1 {\n" + |
| " Y foo(Object o) { return null; } // duplicate\n" + |
| " Z foo(Object o) { return null; } // duplicate\n" + |
| " }\n" + |
| " class C2 {\n" + |
| " <T extends Y> T foo(Object o) { return null; } // ok\n" + |
| " <T extends Z> T foo(Object o) { return null; } // ok\n" + |
| " }\n" + |
| " class C3 {\n" + |
| " A<Y> foo(Object o) { return null; } // duplicate\n" + |
| " A<Z> foo(Object o) { return null; } // duplicate\n" + |
| " }\n" + |
| " class C4 {\n" + |
| " Y foo(Object o) { return null; } // duplicate\n" + |
| " <T extends Z> T foo(Object o) { return null; } // duplicate\n" + |
| " }\n" + |
| "}\n" + |
| "class A<T> {}" + |
| "class Y {}" + |
| "class Z {}" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 3)\n" + |
| " Y foo(Object o) { return null; } // duplicate\n" + |
| " ^^^^^^^^^^^^^\n" + |
| "Duplicate method foo(Object) in type X.C1\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 4)\n" + |
| " Z foo(Object o) { return null; } // duplicate\n" + |
| " ^^^^^^^^^^^^^\n" + |
| "Duplicate method foo(Object) in type X.C1\n" + |
| "----------\n" + |
| "3. ERROR in X.java (at line 11)\n" + |
| " A<Y> foo(Object o) { return null; } // duplicate\n" + |
| " ^^^^^^^^^^^^^\n" + |
| "Duplicate method foo(Object) in type X.C3\n" + |
| "----------\n" + |
| "4. ERROR in X.java (at line 12)\n" + |
| " A<Z> foo(Object o) { return null; } // duplicate\n" + |
| " ^^^^^^^^^^^^^\n" + |
| "Duplicate method foo(Object) in type X.C3\n" + |
| "----------\n" + |
| "5. ERROR in X.java (at line 15)\n" + |
| " Y foo(Object o) { return null; } // duplicate\n" + |
| " ^^^^^^^^^^^^^\n" + |
| "Duplicate method foo(Object) in type X.C4\n" + |
| "----------\n" + |
| "6. ERROR in X.java (at line 16)\n" + |
| " <T extends Z> T foo(Object o) { return null; } // duplicate\n" + |
| " ^^^^^^^^^^^^^\n" + |
| "Duplicate method foo(Object) in type X.C4\n" + |
| "----------\n" |
| // foo(java.lang.Object) is already defined in X.C1 |
| // foo(java.lang.Object) is already defined in X.C3 |
| // foo(java.lang.Object) is already defined in X.C4 |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " class C5 {\n" + |
| " A<Y> foo(A<Y> o) { return null; } // duplicate\n" + |
| " A<Z> foo(A<Z> o) { return null; } // duplicate\n" + |
| " }\n" + |
| " class C6 {\n" + |
| " <T extends Y> T foo(A<Y> o) { return null; } // ok\n" + |
| " <T extends Z> T foo(A<Z> o) { return null; } // ok\n" + |
| " }\n" + |
| "}\n" + |
| "class A<T> {}" + |
| "class Y {}" + |
| "class Z {}" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 3)\r\n" + |
| " A<Y> foo(A<Y> o) { return null; } // duplicate\r\n" + |
| " ^^^^^^^^^^^\n" + |
| "Duplicate method foo(A<Y>) in type X.C5\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 4)\r\n" + |
| " A<Z> foo(A<Z> o) { return null; } // duplicate\r\n" + |
| " ^^^^^^^^^^^\n" + |
| "Duplicate method foo(A<Z>) in type X.C5\n" + |
| "----------\n" |
| // name clash: foo(A<Y>) and foo(A<Z>) have the same erasure |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " class C7 {\n" + |
| " <T extends Y, U> T foo(Object o) { return null; } // ok\n" + |
| " <T extends Z> T foo(Object o) { return null; } // ok\n" + |
| " }\n" + |
| "}\n" + |
| "class A<T> {}" + |
| "class Y {}" + |
| "class Z {}" |
| }, |
| "" |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=90423 |
| public void test050b() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " <N extends B> N a(A<String> s) { return null; }\n" + |
| " <N> Object a(A<Number> n) { return null; }\n" + |
| " <N extends B> void b(A<String> s) {}\n" + |
| " <N extends B> B b(A<Number> n) { return null; }\n" + |
| " void c(A<String> s) {}\n" + |
| " B c(A<Number> n) { return null; }\n" + |
| "}\n" + |
| "class A<T> {}\n" + |
| "class B {}\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " <N extends B> N a(A<String> s) { return null; }\n" + |
| " <N> B a(A<Number> n) { return null; }\n" + |
| "}\n" + |
| "class A<T> {}\n" + |
| "class B {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\n" + |
| " <N extends B> N a(A<String> s) { return null; }\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method a(A<String>) in type X\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 3)\n" + |
| " <N> B a(A<Number> n) { return null; }\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method a(A<Number>) in type X\n" + |
| "----------\n" |
| // name clash: <N>a(A<java.lang.String>) and <N>a(A<java.lang.Number>) have the same erasure |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " <N extends B> N b(A<String> s) { return null; }\n" + |
| " <N extends B> B b(A<Number> n) { return null; }\n" + |
| "}\n" + |
| "class A<T> {}\n" + |
| "class B {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\r\n" + |
| " <N extends B> N b(A<String> s) { return null; }\r\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method b(A<String>) in type X\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 3)\r\n" + |
| " <N extends B> B b(A<Number> n) { return null; }\r\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method b(A<Number>) in type X\n" + |
| "----------\n" |
| // name clash: <N>b(A<java.lang.String>) and <N>b(A<java.lang.Number>) have the same erasure |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " B c(A<String> s) { return null; }\n" + |
| " B c(A<Number> n) { return null; }\n" + |
| "}\n" + |
| "class A<T> {}\n" + |
| "class B {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\r\n" + |
| " B c(A<String> s) { return null; }\r\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method c(A<String>) in type X\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 3)\r\n" + |
| " B c(A<Number> n) { return null; }\r\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method c(A<Number>) in type X\n" + |
| "----------\n" |
| // name clash: c(A<java.lang.String>) and c(A<java.lang.Number>) have the same erasure |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=90423 |
| public void test050c() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " <N extends B> N a(A<Number> s) { return null; }\n" + |
| " <N> Object a(A<Number> n) { return null; }\n" + |
| " <N extends B> N b(A<Number> s) { return null; }\n" + |
| " <N> Object b(A<String> n) { return null; }\n" + |
| "}\n" + |
| "class A<T> {}\n" + |
| "class B {}\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " <N extends B> N a(A<Number> s) { return null; }\n" + |
| " <N> B a(A<Number> n) { return null; }\n" + |
| " <N extends B> N b(A<Number> s) { return null; }\n" + |
| " <N> B b(A<String> n) { return null; }\n" + |
| "}\n" + |
| "class A<T> {}\n" + |
| "class B {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\r\n" + |
| " <N extends B> N a(A<Number> s) { return null; }\r\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method a(A<Number>) in type X\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 3)\r\n" + |
| " <N> B a(A<Number> n) { return null; }\r\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method a(A<Number>) in type X\n" + |
| "----------\n" + |
| "3. ERROR in X.java (at line 4)\r\n" + |
| " <N extends B> N b(A<Number> s) { return null; }\r\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method b(A<Number>) in type X\n" + |
| "----------\n" + |
| "4. ERROR in X.java (at line 5)\r\n" + |
| " <N> B b(A<String> n) { return null; }\r\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method b(A<String>) in type X\n" + |
| "----------\n" |
| // name clash: <N>a(A<java.lang.Number>) and <N>a(A<java.lang.Number>) have the same erasure |
| // name clash: <N>b(A<java.lang.Number>) and <N>b(A<java.lang.String>) have the same erasure |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " <N extends B> void a(A<Number> s) {}\n" + |
| " <N extends B> B a(A<Number> n) { return null; }\n" + |
| " <N extends B> Object b(A<Number> s) { return null; }\n" + |
| " <N extends B> B b(A<Number> n) { return null; }\n" + |
| "}\n" + |
| "class A<T> {}\n" + |
| "class B {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\n" + |
| " <N extends B> void a(A<Number> s) {}\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method a(A<Number>) in type X\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 3)\n" + |
| " <N extends B> B a(A<Number> n) { return null; }\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method a(A<Number>) in type X\n" + |
| "----------\n" + |
| "3. ERROR in X.java (at line 4)\n" + |
| " <N extends B> Object b(A<Number> s) { return null; }\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method b(A<Number>) in type X\n" + |
| "----------\n" + |
| "4. ERROR in X.java (at line 5)\n" + |
| " <N extends B> B b(A<Number> n) { return null; }\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method b(A<Number>) in type X\n" + |
| "----------\n" |
| // <N>a(A<java.lang.Number>) is already defined in X |
| // <N>b(A<java.lang.Number>) is already defined in X |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " void a(A<Number> s) {}\n" + |
| " B a(A<Number> n) { return null; }\n" + |
| " Object b(A<Number> s) {}\n" + |
| " B b(A<Number> n) { return null; }\n" + |
| "}\n" + |
| "class A<T> {}\n" + |
| "class B {}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\r\n" + |
| " void a(A<Number> s) {}\r\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method a(A<Number>) in type X\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 3)\r\n" + |
| " B a(A<Number> n) { return null; }\r\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method a(A<Number>) in type X\n" + |
| "----------\n" + |
| "3. ERROR in X.java (at line 4)\r\n" + |
| " Object b(A<Number> s) {}\r\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method b(A<Number>) in type X\n" + |
| "----------\n" + |
| "4. ERROR in X.java (at line 5)\r\n" + |
| " B b(A<Number> n) { return null; }\r\n" + |
| " ^^^^^^^^^^^^^^\n" + |
| "Duplicate method b(A<Number>) in type X\n" + |
| "----------\n" |
| // a(A<java.lang.Number>) is already defined in X |
| // b(A<java.lang.Number>) is already defined in X |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=89470 |
| public void test051() { |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X implements I {\n" + |
| " public <T extends I> void foo(T t) {}\n" + |
| "}\n" + |
| "interface I {\n" + |
| " <T> void foo(T t);\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 1)\r\n" + |
| " public class X implements I {\r\n" + |
| " ^\n" + |
| "The type X must implement the inherited abstract method I.foo(T)\n" + |
| "----------\n" |
| // X is not abstract and does not override abstract method <T>foo(T) in I |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " void foo(A<String> a) {}\n" + |
| " void foo(A<Integer> a) {}\n" + |
| "}\n" + |
| "class A<T> {}\n", |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\r\n" + |
| " void foo(A<String> a) {}\r\n" + |
| " ^^^^^^^^^^^^^^^^\n" + |
| "Duplicate method foo(A<String>) in type X\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 3)\r\n" + |
| " void foo(A<Integer> a) {}\r\n" + |
| " ^^^^^^^^^^^^^^^^^\n" + |
| "Duplicate method foo(A<Integer>) in type X\n" + |
| "----------\n" |
| // name clash: foo(A<java.lang.String>) and foo(A<java.lang.Integer>) have the same erasure |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " void foo(A<String> a) {}\n" + |
| " Object foo(A<Integer> a) { return null; }\n" + |
| "}\n" + |
| "class A<T> {}\n", |
| }, |
| "" |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=91728 |
| public void _test052() { |
| this.runConformTest( |
| new String[] { |
| "A.java", |
| "public class A<T> {\n" + |
| " public A test() { return null; }\n" + |
| " public A<T> test2() { return null; }\n" + |
| " public A<X> test3() { return null; }\n" + |
| " public <U> A<U> test4() { return null; }\n" + |
| "}\n" + |
| "class B extends A<X> {\n" + |
| " @Override public B test() { return null; }\n" + |
| " @Override public B test2() { return null; }\n" + |
| " @Override public B test3() { return null; }\n" + |
| " @Override public <U> A<U> test4() { return null; }\n" + |
| "}\n" + |
| "class X{}\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "A.java", |
| "public class A<T> {\n" + |
| " public <U> A<U> test() { return null; }\n" + |
| " public <U> A<U> test2() { return null; }\n" + |
| " public <U> A<U> test3() { return null; }\n" + |
| "}\n" + |
| "class B extends A<X> {\n" + |
| " @Override public B test() { return null; }\n" + |
| " @Override public A test2() { return null; }\n" + |
| " @Override public A<X> test3() { return null; }\n" + |
| "}\n" + |
| "class X{}\n" |
| }, |
| "1. WARNING in A.java (at line 7)\r\n" + |
| " @Override public B test() { return null; }\r\n" + |
| " ^\n" + |
| "Type safety: The return type B for test() from the type B needs unchecked conversion to conform to A<U> from the type A<T>\n" + |
| "----------\n" + |
| "2. WARNING in A.java (at line 8)\n" + |
| " @Override public A test2() { return null; }\n" + |
| " ^\n" + |
| "Type safety: The return type A for test2() from the type B needs unchecked conversion to conform to A<U> from the type A<T>\n" + |
| "----------\n" + |
| "3. WARNING in A.java (at line 9)\r\n" + |
| " @Override public A<X> test3() { return null; }\r\n" + |
| " ^\n" + |
| "Type safety: The return type A<X> for test3() from the type B needs unchecked conversion to conform to A<U> from the type A<T>\n" + |
| "----------\n" |
| // warning: test() in B overrides <U>test() in A; return type requires unchecked conversion |
| // warning: test2() in B overrides <U>test2() in A; return type requires unchecked conversion |
| // warning: test3() in B overrides <U>test3() in A; return type requires unchecked conversion |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=91728 |
| public void _test053() { |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "class X {\n" + |
| " void test(A a) { B b = a.foo(); }\n" + |
| " void test2(A<X> a) { B b = a.foo(); }\n" + |
| " void test3(B b) { B bb = b.foo(); }\n" + |
| "}\n" + |
| "class A<T> {\n" + |
| " <U> A<U> foo() { return null; }\n" + |
| "}\n" + |
| "class B extends A<X> {\n" + |
| " @Override B foo() { return null; }\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\r\n" + |
| " void test(A a) { B b = a.foo(); }\r\n" + |
| " ^\n" + |
| "Type mismatch: cannot convert from A to B\n" + |
| "----------\n" + |
| "2. WARNING in X.java (at line 2)\r\n" + |
| " void test(A a) { B b = a.foo(); }\r\n" + |
| " ^^^^^^^\n" + |
| "Type safety: The method foo() belongs to the raw type A. References to generic type A<T> should be parameterized\n" + |
| "----------\n" + |
| "3. ERROR in X.java (at line 3)\r\n" + |
| " void test2(A<X> a) { B b = a.foo(); }\r\n" + |
| " ^\n" + |
| "Type mismatch: cannot convert from A<Object> to B\n" + |
| "----------\n" + |
| "4. WARNING in X.java (at line 10)\r\n" + |
| " @Override B foo() { return null; }\r\n" + |
| " ^\n" + |
| "Type safety: The return type B for foo() from the type B needs unchecked conversion to conform to A<U> from the type A<T>\n" + |
| "----------\n" |
| // 2: incompatible types |
| // 3: incompatible types; no instance(s) of type variable(s) U exist so that A<U> conforms to B |
| // 10 warning: foo() in B overrides <U>foo() in A; return type requires unchecked conversion |
| ); |
| } |
| |
| // more duplicate tests, see https://bugs.eclipse.org/bugs/show_bug.cgi?id=94897 |
| public void test054() { |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " void a(Object x) {}\n" + |
| " <T> T a(T x) { return null; }\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\n" + |
| " void a(Object x) {}\n" + |
| " ^^^^^^^^^^^\n" + |
| "Duplicate method a(Object) in type X\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 3)\n" + |
| " <T> T a(T x) { return null; }\n" + |
| " ^^^^^^\n" + |
| "Method a(T) has the same erasure a(Object) as another method in type X\n" + |
| "----------\n" |
| // a(X) is already defined in X |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " <T1, T2> String aaa(X x) { return null; }\n" + |
| " <T extends X> T aaa(T x) { return null; }\n" + |
| " <T> String aa(X x) { return null; }\n" + |
| " <T extends X> T aa(T x) { return null; }\n" + |
| " String a(X x) { return null; }\n" + // dup |
| " <T extends X> T a(T x) { return null; }\n" + |
| |
| " <T> String z(X x) { return null; }\n" + |
| " <T, S> Object z(X x) { return null; }\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 6)\r\n" + |
| " String a(X x) { return null; }\r\n" + |
| " ^^^^^^\n" + |
| "Duplicate method a(X) in type X\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 7)\r\n" + |
| " <T extends X> T a(T x) { return null; }\r\n" + |
| " ^^^^^^\n" + |
| "Method a(T) has the same erasure a(X) as another method in type X\n" + |
| "----------\n" |
| // a(X) is already defined in X |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X<T> {\n" + |
| " Object foo(X<T> t) { return null; }\n" + |
| " <S> String foo(X<T> s) { return null; }\n" + |
| "}\n" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X<T> {\n" + |
| " <T1 extends X<T1>> void dupT() {}\n" + |
| " <T2 extends X<T2>> Object dupT() {return null;}\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 2)\r\n" + |
| " <T1 extends X<T1>> void dupT() {}\r\n" + |
| " ^^^^^^\n" + |
| "Duplicate method dupT() in type X<T>\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 3)\r\n" + |
| " <T2 extends X<T2>> Object dupT() {return null;}\r\n" + |
| " ^^^^^^\n" + |
| "Duplicate method dupT() in type X<T>\n" + |
| "----------\n" |
| // <T1>dupT() is already defined in X |
| ); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " <T> T a(A<T> t) {return null;}\n" + |
| " <T> String a(A<Object> o) {return null;}\n" + |
| " <T> T aa(A<T> t) {return null;}\n" + |
| " String aa(A<Object> o) {return null;}\n" + |
| "}\n" + |
| "class A<T> {}\n", |
| }, |
| "" |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=95933 |
| public void test055() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " public static void main(String[] args) {\n" + |
| " A a = new C();\n" + |
| " try { a.f(new Object()); } catch (ClassCastException e) {\n" + |
| " System.out.println(1);\n" + |
| " }\n" + |
| " }\n" + |
| "}\n" + |
| "interface A<T> { void f(T x); }\n" + |
| "interface B extends A<String> { void f(String x); }\n" + |
| "class C implements B { public void f(String x) {} }\n" |
| }, |
| "1" |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=97809 |
| public void test056() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " public static String bind(String message, Object binding) { return null; }\n" + |
| " public static String bind(String message, Object[] bindings) { return null; }\n" + |
| "}\n" + |
| "class Y extends X {\n" + |
| " public static String bind(String message, Object binding) { return null; }\n" + |
| " public static String bind(String message, Object[] bindings) { return null; }\n" + |
| "}\n" + |
| "class Z {\n" + |
| " void bar() { Y.bind(\"\", new String[] {\"\"}); }\n" + |
| "}\n" |
| }, |
| ""); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=84035 |
| public void test057() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " public static void main(String[] args) {\n" + |
| " A<Integer> x = new A<Integer>();\n" + |
| " B<Integer> y = new B<Integer>();\n" + |
| " new X().print(x);\n" + |
| " new X().print(y);\n" + |
| " }\n" + |
| " public <T extends IA<?>> void print(T a) { System.out.print(1); }\n" + |
| " public <T extends IB<?>> void print(T a) { System.out.print(2); }\n" + |
| "}\n" + |
| "interface IA<E> {}\n" + |
| "interface IB<E> extends IA<E> {}\n" + |
| "class A<E> implements IA<E> {}\n" + |
| "class B<E> implements IB<E> {}\n" |
| }, |
| "12"); |
| this.runConformTest( |
| new String[] { |
| "XX.java", |
| "public class XX {\n" + |
| " public static void main(String[] args) {\n" + |
| " A<Integer> x = new A<Integer>();\n" + |
| " B<Integer> y = new B<Integer>();\n" + |
| " print(x);\n" + |
| " print(y);\n" + |
| " }\n" + |
| " public static <T extends IA<?>> void print(T a) { System.out.print(3); }\n" + |
| " public static <T extends IB<?>> void print(T a) { System.out.print(4); }\n" + |
| "}\n" + |
| "interface IA<E> {}\n" + |
| "interface IB<E> extends IA<E> {}\n" + |
| "class A<E> implements IA<E> {}\n" + |
| "class B<E> implements IB<E> {}\n" |
| }, |
| "34"); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=94898 |
| public void test058() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X <B extends Number> {\n" + |
| " public static void main(String[] args) {\n" + |
| " X<Integer> x = new X<Integer>();\n" + |
| " x.aaa(null);\n" + |
| " x.aaa(15);\n" + |
| " }\n" + |
| " <T> T aaa(T t) { System.out.print('T'); return null; }\n" + |
| " void aaa(B b) { System.out.print('B'); }\n" + |
| "}\n" |
| }, |
| "BB"); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X<A> {\n" + |
| " void test() {\n" + |
| " new X<Object>().foo(\"X\");\n" + |
| " new X<Object>().foo2(\"X\");\n" + |
| " }\n" + |
| " <T> T foo(T t) {return null;}\n" + |
| " void foo(A a) {}\n" + |
| " <T> T foo2(T t) {return null;}\n" + |
| " <T> void foo2(A a) {}\n" + |
| "}\n" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 3)\r\n" + |
| " new X<Object>().foo(\"X\");\r\n" + |
| " ^^^\n" + |
| "The method foo(String) is ambiguous for the type X<Object>\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 4)\r\n" + |
| " new X<Object>().foo2(\"X\");\r\n" + |
| " ^^^^\n" + |
| "The method foo2(String) is ambiguous for the type X<Object>\n" + |
| "----------\n" |
| // both references are ambiguous |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "X.java", |
| "public class X<A> extends Y<A> {\n" + |
| " void test() {\n" + |
| " new X<Object>().foo(\"X\");\n" + |
| " new X<Object>().foo2(\"X\");\n" + |
| " }\n" + |
| " <T> T foo(T t) {return null;}\n" + |
| " <T> T foo2(T t) {return null;}\n" + |
| "}\n" + |
| "class Y<A> {\n" + |
| " void foo(A a) {}\n" + |
| " <T> void foo2(A a) {}\n" + |
| "}" |
| }, |
| "----------\n" + |
| "1. ERROR in X.java (at line 3)\r\n" + |
| " new X<Object>().foo(\"X\");\r\n" + |
| " ^^^\n" + |
| "The method foo(String) is ambiguous for the type X<Object>\n" + |
| "----------\n" + |
| "2. ERROR in X.java (at line 4)\r\n" + |
| " new X<Object>().foo2(\"X\");\r\n" + |
| " ^^^^\n" + |
| "The method foo2(String) is ambiguous for the type X<Object>\n" + |
| "----------\n" |
| // both references are ambiguous |
| ); |
| } |
| |
| public void test059() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " public static void main(String[] args) {new B().foo(\"aa\");}\n" + |
| "}\n" + |
| "class A { <U> void foo(U u) {System.out.print(false);} }\n" + |
| "class B extends A { <V> void foo(String s) {System.out.print(true);} }\n" |
| }, |
| "true"); |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "public class X {\n" + |
| " public static void main(String[] args) {new B().foo(\"aa\");}\n" + |
| "}\n" + |
| "class A { <U> void foo(String s) {System.out.print(true);} }\n" + |
| "class B extends A { <V> void foo(V v) {System.out.print(false);} }\n" |
| }, |
| "true"); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=90619 |
| public void test060() { |
| this.runConformTest( |
| new String[] { |
| "I.java", |
| "import java.util.Iterator;\n" + |
| "public interface I {\n" + |
| " void method(Iterator<Object> iter);\n" + |
| " public static class TestClass implements I {\n" + |
| " public void method(Iterator iter) {}\n" + |
| " }\n" + |
| "}" |
| }, |
| "" |
| ); |
| this.runConformTest( |
| new String[] { |
| "I2.java", |
| "import java.util.Iterator;\n" + |
| "public interface I2 {\n" + |
| " void method(Iterator<Object>[] iter);\n" + |
| " public static class TestClass implements I2 {\n" + |
| " public void method(Iterator[] iter) {}\n" + |
| " }\n" + |
| "}" |
| }, |
| "" |
| ); |
| this.runNegativeTest( |
| new String[] { |
| "I3.java", |
| "import java.util.Iterator;\n" + |
| "public interface I3 {\n" + |
| " void method(Iterator<Object>[] iter);\n" + |
| " public static class TestClass implements I3 {\n" + |
| " public void method(Iterator[][] iter) {}\n" + |
| " }\n" + |
| "}" |
| }, |
| "----------\n" + |
| "1. ERROR in I3.java (at line 4)\r\n" + |
| " public static class TestClass implements I3 {\r\n" + |
| " ^^^^^^^^^\n" + |
| "The type I3.TestClass must implement the inherited abstract method I3.method(Iterator<Object>[])\n" + |
| "----------\n" |
| // does not override abstract method method(java.util.Iterator<java.lang.Object>[]) in I3 |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=99106 |
| public void test061() { |
| this.runNegativeTest( |
| new String[] { |
| "Try.java", |
| "public class Try {\n" + |
| " public static void main(String[] args) {\n" + |
| " Ex<String> ex = new Ex<String>();\n" + |
| " ex.one(\"eclipse\", new Integer(1));\n" + |
| " ex.two(new Integer(1));\n" + |
| " ex.three(\"eclipse\");\n" + |
| " ex.four(\"eclipse\");\n" + |
| " System.out.print(',');\n" + |
| " Ex ex2 = ex;\n" + |
| " ex2.one(\"eclipse\", new Integer(1));\n" + // unchecked warning |
| " ex2.two(new Integer(1));\n" + // unchecked warning |
| " ex2.three(\"eclipse\");\n" + // unchecked warning |
| " ex2.four(\"eclipse\");\n" + // unchecked warning |
| " }\n" + |
| "}\n" + |
| "class Top<TC> {\n" + |
| " <TM> void one(TC cTop, TM mTop) { System.out.print(-1); }\n" + |
| " <TM> void two(TM mTop) { System.out.print(-2); }\n" + |
| " void three(TC cTop) { System.out.print(-3); }\n" + |
| " <TM> void four(TC cTop) { System.out.print(-4); }\n" + |
| "}\n" + |
| "class Ex<C> extends Top<C> {\n" + |
| " @Override <M> void one(C cEx, M mEx) { System.out.print(1); }\n" + |
| " @Override <M> void two(M mEx) { System.out.print(2); }\n" + |
| " @Override void three(C cEx) { System.out.print(3); }\n" + |
| " @Override <M> void four(C cEx) { System.out.print(4); }\n" + |
| "}" |
| }, |
| "----------\n" + |
| "1. WARNING in Try.java (at line 10)\n" + |
| " ex2.one(\"eclipse\", new Integer(1));\n" + |
| " ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" + |
| "Type safety: The method one(Object, Object) belongs to the raw type Ex. References to generic type Ex<C> should be parameterized\n" + |
| "----------\n" + |
| "2. WARNING in Try.java (at line 11)\n" + |
| " ex2.two(new Integer(1));\n" + |
| " ^^^^^^^^^^^^^^^^^^^^^^^\n" + |
| "Type safety: The method two(Object) belongs to the raw type Ex. References to generic type Ex<C> should be parameterized\n" + |
| "----------\n" + |
| "3. WARNING in Try.java (at line 12)\n" + |
| " ex2.three(\"eclipse\");\n" + |
| " ^^^^^^^^^^^^^^^^^^^^\n" + |
| "Type safety: The method three(Object) belongs to the raw type Ex. References to generic type Ex<C> should be parameterized\n" + |
| "----------\n" + |
| "4. WARNING in Try.java (at line 13)\n" + |
| " ex2.four(\"eclipse\");\n" + |
| " ^^^^^^^^^^^^^^^^^^^\n" + |
| "Type safety: The method four(Object) belongs to the raw type Ex. References to generic type Ex<C> should be parameterized\n" + |
| "----------\n" |
| ); |
| } |
| |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=99106 |
| public void test062() { |
| this.runNegativeTest( |
| new String[] { |
| "Errors.java", |
| "public class Errors {\n" + |
| " void foo() {\n" + |
| " Ex<String> ex = new Ex<String>();\n" + |
| " ex.proof(\"eclipse\");\n" + |
| " ex.five(\"eclipse\");\n" + |
| " ex.six(\"eclipse\");\n" + |
| " Ex ex2 = ex;\n" + |
| " ex2.proof(\"eclipse\");\n" + |
| " ex2.five(\"eclipse\");\n" + |
| " ex2.six(\"eclipse\");\n" + |
| " }\n" + |
| "}\n" + |
| "class Top<TC> {\n" + |
| " <TM> void proof(Object cTop) {}\n" + |
| " <TM> void five(TC cTop) {}\n" + |
| " void six(TC cTop) {}\n" + |
| "}\n" + |
| "class Ex<C> extends Top<C> {\n" + |
| " @Override void proof(Object cTop) {}\n" + |
| " @Override void five(C cEx) {}\n" + |
| " @Override <M> void six(C cEx) {}\n" + |
| "}" |
| }, |
| "----------\n" + |
| "1. ERROR in Errors.java (at line 6)\n" + |
| " ex.six(\"eclipse\");\n" + |
| " ^^^\n" + |
| "The method six(String) is ambiguous for the type Ex<String>\n" + |
| "----------\n" + |
| "2. WARNING in Errors.java (at line 9)\n" + |
| " ex2.five(\"eclipse\");\n" + |
| " ^^^^^^^^^^^^^^^^^^^\n" + |
| "Type safety: The method five(Object) belongs to the raw type Ex. References to generic type Ex<C> should be parameterized\n" + |
| "----------\n" + |
| "3. ERROR in Errors.java (at line 10)\n" + |
| " ex2.six(\"eclipse\");\n" + |
| " ^^^\n" + |
| "The method six(Object) is ambiguous for the type Ex\n" + |
| "----------\n" + |
| "4. ERROR in Errors.java (at line 21)\n" + |
| " @Override <M> void six(C cEx) {}\n" + |
| " ^^^^^^^^^^\n" + |
| "The method six(C) of type Ex<C> must override a superclass method\n" + |
| "----------\n" + |
| "5. ERROR in Errors.java (at line 21)\n" + |
| " @Override <M> void six(C cEx) {}\n" + |
| " ^^^^^^^^^^\n" + |
| "Name clash: The method six(C) of type Ex<C> has the same erasure as six(TC) of type Top<TC> but does not override it\n" + |
| "----------\n" |
| // we disagree about the ambiguous errors on lines 5, 9 & 20, see the message sends to proof() |
| // 5: reference to five is ambiguous, both method <TM>five(TC) in Top<java.lang.String> and method five(C) in Ex<java.lang.String> match |
| // 6: reference to six is ambiguous, both method six(TC) in Top<java.lang.String> and method <M>six(C) in Ex<java.lang.String> match |
| // 9: reference to five is ambiguous, both method <TM>five(TC) in Top and method five(C) in Ex match |
| // 9: warning: [unchecked] unchecked call to <TM>five(TC) as a member of the raw type Top |
| // 10: reference to six is ambiguous, both method six(TC) in Top and method <M>six(C) in Ex match |
| // 10: warning: [unchecked] unchecked call to six(TC) as a member of the raw type Top |
| // 20: method does not override a method from its superclass |
| // 21: method does not override a method from its superclass |
| ); |
| } |
| //https://bugs.eclipse.org/bugs/show_bug.cgi?id=104551 |
| public void test063() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "interface IStructuredContentProvider<I, E extends I> {\n" + |
| " public E[] getElements(I inputElement);\n" + |
| " public E[] getChildren(E parent);\n" + |
| "}\n" + |
| "\n" + |
| "public class X implements IStructuredContentProvider {\n" + |
| "// eclipse error: The type X must implement the inherited\n" + |
| "// abstract method IStructuredContentProvider.getChildren(I)\n" + |
| "\n" + |
| " public Object[] getElements(Object inputElement) {\n" + |
| " // eclipse error: The return type is incompatible with\n" + |
| " // IStructuredContentProvider.getElements(Object)\n" + |
| " return null;\n" + |
| " }\n" + |
| "\n" + |
| " public Object[] getChildren(Object parent) {\n" + |
| " // eclipse error: Name clash: The method getChildren(Object) of type\n" + |
| " // X has the same erasure as getChildren(E) of type\n" + |
| " // IStructuredContentProvider<I,E> but does not override it\n" + |
| " return null;\n" + |
| " }\n" + |
| "}\n" |
| }, |
| ""); |
| } |
| //https://bugs.eclipse.org/bugs/show_bug.cgi?id=104551 - variation |
| public void test064() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "interface IStructuredContentProvider<I, E extends I> {\n" + |
| " public E[] getElements(I inputElement);\n" + |
| " public E[] getChildren(E parent);\n" + |
| "}\n" + |
| "\n" + |
| "public class X implements IStructuredContentProvider<Object,Object> {\n" + |
| "// eclipse error: The type X must implement the inherited\n" + |
| "// abstract method IStructuredContentProvider.getChildren(I)\n" + |
| "\n" + |
| " public Object[] getElements(Object inputElement) {\n" + |
| " // eclipse error: The return type is incompatible with\n" + |
| " // IStructuredContentProvider.getElements(Object)\n" + |
| " return null;\n" + |
| " }\n" + |
| "\n" + |
| " public Object[] getChildren(Object parent) {\n" + |
| " // eclipse error: Name clash: The method getChildren(Object) of type\n" + |
| " // X has the same erasure as getChildren(E) of type\n" + |
| " // IStructuredContentProvider<I,E> but does not override it\n" + |
| " return null;\n" + |
| " }\n" + |
| "}\n" |
| }, |
| ""); |
| } |
| //https://bugs.eclipse.org/bugs/show_bug.cgi?id=104551 - variation |
| public void test065() { |
| this.runConformTest( |
| new String[] { |
| "X.java", |
| "import java.util.List;\n" + |
| "\n" + |
| "interface IStructuredContentProvider<I, E extends List<String>> {\n" + |
| " public E[] getElements(I inputElement);\n" + |
| " public E[] getChildren(E parent);\n" + |
| "}\n" + |
| "\n" + |
| "public class X implements IStructuredContentProvider {\n" + |
| "// eclipse error: The type X must implement the inherited\n" + |
| "// abstract method IStructuredContentProvider.getChildren(I)\n" + |
| "\n" + |
| " public List[] getElements(Object inputElement) {\n" + |
| " // eclipse error: The return type is incompatible with\n" + |
| " // IStructuredContentProvider.getElements(Object)\n" + |
| " return null;\n" + |
| " }\n" + |
| "\n" + |
| " public List[] getChildren(List parent) {\n" + |
| " // eclipse error: Name clash: The method getChildren(Object) of type\n" + |
| " // X has the same erasure as getChildren(E) of type\n" + |
| " // IStructuredContentProvider<I,E> but does not override it\n" + |
| " return null;\n" + |
| " }\n" + |
| "}\n" |
| }, |
| ""); |
| } |
| } |