CloneableProblem.java revision 553:9d9f26857129 
1/*
2 * Copyright (c) 1997, 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 4047816
27 * @summary certain inheritance patterns involving methods defined in
28 *          Object used to cause spurious error messages.
29 * @author turnidge
30 *
31 * @compile CloneableProblem.java
32 */
33
34interface A extends Cloneable
35{
36  public Object clone() throws CloneNotSupportedException;
37}
38interface B extends A
39{ }
40interface C extends A
41{ }
42interface D extends B, C
43{ }
44
45public class CloneableProblem implements D
46{
47  private int i;
48  public CloneableProblem(int i)
49  {
50    this.i = i;
51  }
52  public Object clone()
53  {
54    CloneableProblem theCloneableProblem = null;
55    try
56      {
57        theCloneableProblem = (CloneableProblem) super.clone();
58        theCloneableProblem.i = i;
59      }
60    catch (CloneNotSupportedException cnse)
61      { }
62    return theCloneableProblem;
63  }
64  public static void main(String argv[])
65  {
66    try
67      {
68        A a0 = new CloneableProblem(0);
69        A a1 = (A) a0.clone();
70        B b0 = new CloneableProblem(0);
71        B b1 = (B) b0.clone();
72        C c0 = new CloneableProblem(0);
73        C c1 = (C) c0.clone();
74        D d0 = new CloneableProblem(0);
75        D d1 = (D) d0.clone();
76      }
77    catch (CloneNotSupportedException cnse)
78      { }
79      }
80}
81