Quelle CloneableProblem.java Sprache: JAVA

/*
* Copyright (c) 1997, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/

/*
* @test
* @bug 4047816
* @summary certain inheritance patterns involving methods defined in
*          Object used to cause spurious error messages.
* @author turnidge
*
* @compile CloneableProblem.java
*/

interface A extends Cloneable
{
  public Object clone() throws CloneNotSupportedException;
}
interface B extends A
{ }
interface C extends A
{ }
interface D extends B, C
{ }

public class CloneableProblem implements D
{
  private int i;
  public CloneableProblem(int i)
  {
    this.i = i;
  }
  public Object clone()
  {
    CloneableProblem theCloneableProblem = null;
    try
      {
        theCloneableProblem = (CloneableProblem) super.clone();
        theCloneableProblem.i = i;
      }
    catch (CloneNotSupportedException cnse)
      { }
    return theCloneableProblem;
  }
  public static void main(String argv[])
  {
    try
      {
        A a0 = new CloneableProblem(0);
        A a1 = (A) a0.clone();
        B b0 = new CloneableProblem(0);
        B b1 = (B) b0.clone();
        C c0 = new CloneableProblem(0);
        C c1 = (C) c0.clone();
        D d0 = new CloneableProblem(0);
        D d1 = (D) d0.clone();
      }
    catch (CloneNotSupportedException cnse)
      { }
      }
}

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