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