jdk8-mips64-public/langtools: test/tools/javac/foreach/SuperfluousAbstract.java@9a66ca7c79fa

     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  */

    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  */

    34 import java.util.AbstractCollection;

    35 import java.util.Collection;

    36 import java.util.Iterator;

    38 interface Q<E> extends Collection<E> {}

    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 }

    45 class ConcreteQ<E> extends AbstractQ<E> {

    46     public int size() { return 0; }

    47     public Iterator<E> iterator() { return null; }

    48 }

    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 }

Mercurial > jdk8-mips64-public > langtools / file revision