1 /*
   2  * Copyright 2003 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 4913433
  27  * @summary Generic framework to test Method.equals.
  28  *
  29  * @clean A
  30  * @compile -source 1.5 Equals.java
  31  * @run main Equals
  32  */
  33 
  34 import java.lang.reflect.*;
  35 
  36 class A {
  37     public Object m() { return this; }
  38 }
  39 
  40 public class Equals extends A {
  41     public Equals m() { return this; }
  42 
  43     public static void main(String [] args) {
  44         Equals e = new Equals();
  45         e.returnType();
  46     }
  47 
  48     private void returnType() {
  49         Class c = this.getClass();
  50         Method [] ma = c.getMethods();
  51         Method m0 = null, m1 = null;
  52 
  53         for (int i = 0; i < ma.length; i++) {
  54             if (ma[i].getName().equals("m")) {
  55                 if (m0 == null) {
  56                     m0 = ma[i];
  57                     continue;
  58                 } else {
  59                     m1 = ma[i];
  60                     break;
  61                 }
  62             }
  63         }
  64 
  65         if (m0 == null || m1 == null)
  66             throw new RuntimeException("Can't find bridge methods");
  67 
  68         if (m0.equals(m1))
  69             throw new RuntimeException("Return types not compared");
  70         System.out.println("\"" + m0 + "\" and \"" + m1 + "\" are different");
  71     }
  72 }