test/tools/javac/generics/InterfaceCast1.java

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1 /*
2 * Copyright 2001-2004 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 4453032
27 * @summary overridden interface method causes the compiler to reject cast
28 * @author gafter
29 *
30 * @compile -source 1.5 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 }

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