Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: test/tools/javac/foreach/SuperfluousAbstract.java
test/tools/javac/foreach/SuperfluousAbstract.java
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- 2eb010b6cb22
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| 1 /* | |
| 2 * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 */ | |
| 23 | |
| 24 /* | |
| 25 * @test | |
| 26 * @bug 4912795 | |
| 27 * @summary AbstractMethodError throws if not redeclare abstract iterator() method | |
| 28 * @author gafter | |
| 29 */ | |
| 30 | |
| 31 import java.util.AbstractCollection; | |
| 32 import java.util.Collection; | |
| 33 import java.util.Iterator; | |
| 34 | |
| 35 interface Q<E> extends Collection<E> {} | |
| 36 | |
| 37 abstract class AbstractQ<E> extends AbstractCollection<E> implements Q<E> { | |
| 38 // Uncomment this to avoid the AbstractMethodError: | |
| 39 //public abstract Iterator<E> iterator(); | |
| 40 } | |
| 41 | |
| 42 class ConcreteQ<E> extends AbstractQ<E> { | |
| 43 public int size() { return 0; } | |
| 44 public Iterator<E> iterator() { return null; } | |
| 45 } | |
| 46 | |
| 47 public class SuperfluousAbstract { | |
| 48 public static void main(String[] args) { | |
| 49 try { | |
| 50 Q<Integer> q = new ConcreteQ<Integer>() ; | |
| 51 for (Integer i : q) {} | |
| 52 } | |
| 53 catch (AbstractMethodError e) { | |
| 54 e.printStackTrace(System.err); | |
| 55 } | |
| 56 catch (NullPointerException e) { | |
| 57 // expected, since iterator() returns null | |
| 58 } | |
| 59 } | |
| 60 } |
