/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @author Salikh Zakirov
* @version $Revision: 1.3.12.1.4.3 $
*/
package gc;
import java.lang.ref.PhantomReference;
import java.lang.ref.Reference;
import java.lang.ref.ReferenceQueue;
/**
* @keyword
*/
public class RefRemove {
public static void main(String[] args) throws Exception {
ReferenceQueue queue = new ReferenceQueue();
Object o = new RefRemove();
Reference ref = new PhantomReference(o, queue);
o = null;
System.gc();
System.err.println("waiting for a reference..");
Reference enqueued = queue.remove();
if (enqueued == ref) {
System.out.println("PASSED, " + ref);
} else {
System.out.println("FAILED, wrong reference enqueued " + ref);
}
}
}