Fri, 24 Apr 2020 03:58:51 +0100
Merge
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 */
24 /*
25 * @test
26 * @bug 4856981
27 * @summary generics: overridden method gets invoked (bridge method problem)
28 * @author gafter
29 *
30 * @compile BridgeOrder.java
31 * @run main BridgeOrder
32 */
34 interface A<T> {
35 public void f(T x);
36 }
38 class X {
39 }
41 // Moving class B here makes the problem go away
43 class C<T extends X> extends B<T> implements A<T> {
45 // This also makes the problem go away.
46 /*
47 public void f(T x) {
48 super.f(x);
49 } */
50 }
52 class B<T extends X> implements A<T> {
53 public void f(T x) {
54 System.out.println("B.f()");
55 }
56 }
58 class D extends C<X> {
59 public void f(X y) {
60 System.out.println("D.f()");
61 }
62 }
64 public class BridgeOrder {
65 public static void main(String args[]) {
66 A<X> x = new D();
67 x.f(new X());
68 }
69 }