Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: test/tools/javac/foreach/SuperfluousAbstract.java
test/tools/javac/foreach/SuperfluousAbstract.java
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| 1 /* | |
| 2 * Copyright 2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 */ | |
| 23 | |
| 24 /* | |
| 25 * @test | |
| 26 * @bug 4912795 | |
| 27 * @summary AbstractMethodError throws if not redeclare abstract iterator() method | |
| 28 * @author gafter | |
| 29 * | |
| 30 * @compile -source 1.5 SuperfluousAbstract.java | |
| 31 * @run main SuperfluousAbstract | |
| 32 */ | |
| 33 | |
| 34 import java.util.AbstractCollection; | |
| 35 import java.util.Collection; | |
| 36 import java.util.Iterator; | |
| 37 | |
| 38 interface Q<E> extends Collection<E> {} | |
| 39 | |
| 40 abstract class AbstractQ<E> extends AbstractCollection<E> implements Q<E> { | |
| 41 // Uncomment this to avoid the AbstractMethodError: | |
| 42 //public abstract Iterator<E> iterator(); | |
| 43 } | |
| 44 | |
| 45 class ConcreteQ<E> extends AbstractQ<E> { | |
| 46 public int size() { return 0; } | |
| 47 public Iterator<E> iterator() { return null; } | |
| 48 } | |
| 49 | |
| 50 public class SuperfluousAbstract { | |
| 51 public static void main(String[] args) { | |
| 52 try { | |
| 53 Q<Integer> q = new ConcreteQ<Integer>() ; | |
| 54 for (Integer i : q) {} | |
| 55 } | |
| 56 catch (AbstractMethodError e) { | |
| 57 e.printStackTrace(System.err); | |
| 58 } | |
| 59 catch (NullPointerException e) { | |
| 60 // expected, since iterator() returns null | |
| 61 } | |
| 62 } | |
| 63 } |
