package p; | |
abstract class A<T>{ | |
public abstract void f(); | |
public abstract T m(T t); | |
} | |
abstract class B extends A<String>{ | |
@Override | |
public String m(String t) { | |
String s= t; | |
return null; | |
} | |
public abstract void f(); | |
} | |
class C extends A<Object>{ | |
public void f(){} | |
@Override | |
public Object m(Object t) { | |
Object s= t; | |
return null; | |
} | |
} |