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/*
* Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 4912795
* @summary AbstractMethodError throws if not redeclare abstract iterator() method
* @author gafter
*/
import java.util.AbstractCollection;
import java.util.Collection;
import java.util.Iterator;
interface Q<E> extends Collection<E> {}
abstract class AbstractQ<E> extends AbstractCollection<E> implements Q<E> {
// Uncomment this to avoid the AbstractMethodError:
//public abstract Iterator<E> iterator();
}
class ConcreteQ<E> extends AbstractQ<E> {
public int size() { return 0; }
public Iterator<E> iterator() { return null; }
}
public class SuperfluousAbstract {
public static void main(String[] args) {
try {
Q<Integer> q = new ConcreteQ<Integer>() ;
for (Integer i : q) {}
}
catch (AbstractMethodError e) {
e.printStackTrace(System.err);
}
catch (NullPointerException e) {
// expected, since iterator() returns null
}
}
}
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