1 /*

     2  * Copyright 1997 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 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 

    34 interface A extends Cloneable

    35 {

    36   public Object clone() throws CloneNotSupportedException;

    37 }

    38 interface B extends A

    39 { }

    40 interface C extends A

    41 { }

    42 interface D extends B, C

    43 { }

    44 

    45 public 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 }