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 34 interface A extends Cloneable 35 { clone()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; CloneableProblem(int i)48 public CloneableProblem(int i) 49 { 50 this.i = i; 51 } clone()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 } main(String argv[])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