| /******************************************************************************* |
| * Copyright (c) 2011 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.internal.corext.util; |
| |
| import java.lang.reflect.Array; |
| import java.util.Collection; |
| |
| public class CollectionsUtil { |
| /** |
| * Returns an array containing all of the elements in the given collection. This is a |
| * compile-time type-safe alternative to {@link Collection#toArray(Object[])}. |
| * |
| * @param collection the source collection |
| * @param clazz the type of the array elements |
| * @param <A> the type of the array elements |
| * @return an array of type <code>A</code> containing all of the elements in the given |
| * collection |
| * |
| * @throws NullPointerException if the specified collection or class is null |
| * |
| * @see <a href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7023484">Sun bug 7023484</a> |
| */ |
| public static <A> A[] toArray(Collection<? extends A> collection, Class<A> clazz) { |
| Object array= Array.newInstance(clazz, collection.size()); |
| @SuppressWarnings("unchecked") |
| A[] typedArray= collection.toArray((A[]) array); |
| return typedArray; |
| } |
| } |