1 /*

     2  * Copyright (c) 2001, 2004, 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 4453032

    27  * @summary overridden interface method causes the compiler to reject cast

    28  * @author gafter

    29  *

    30  * @compile  InterfaceCast1.java

    31  */

    32 

    33 public class InterfaceCast1 {

    34     public static void main(String[] args) throws Exception {

    35     }

    36 }

    37 

    38 interface Collection<E> {

    39     <T> T[] toArray(T[] a);

    40 }

    41 

    42 interface Set<E> extends Collection<E> {

    43     <T> T[] toArray(T[] a);

    44 }

    45 

    46 interface SortedSet<E> extends Set<E> {

    47 }

    48 

    49 class TreeSet<E> {

    50     public void addAll(Collection<E> c) {

    51         if (c instanceof SortedSet) {

    52             SortedSet<E> ss = (SortedSet<E>) c;

    53         }

    54     }

    55 }