1 /*
   2  * Copyright 2003-2004 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 4891872 4989735 4990789 5020490
  27  * @summary Check isEnum() method
  28  * @author Joseph D. Darcy
  29  */
  30 
  31 import java.lang.annotation.*;
  32 
  33 public class IsEnum {
  34 
  35     static int test(Class clazz, boolean expected) {
  36         int status = (clazz.isEnum() == expected)?0:1;
  37 
  38         if (status == 1) {
  39             System.err.println("Unexpected enum status for " + clazz);
  40         }
  41         return status;
  42     }
  43 
  44     public static void main(String argv[]) {
  45         int failures = 0;
  46 
  47         failures += test(IsEnum.class, false);
  48         failures += test(String.class, false);
  49         failures += test(Enum.class, false);
  50         failures += test(java.math.RoundingMode.class, true);
  51 
  52         // Classes in java.lang.annoation
  53         failures += test(Annotation.class, false);
  54         failures += test(ElementType.class, true);
  55         failures += test(Retention.class, false);
  56         failures += test(RetentionPolicy.class, true);
  57         failures += test(Target.class, false);
  58         failures += test(EnumPoseur.class, false);
  59 
  60         // Classes for specialized enum constants aren't enum's
  61         failures += test(SpecialEnum.class, true);
  62         failures += test(SpecialEnum.RED.getClass(), false);
  63         failures += test(SpecialEnum.GREEN.getClass(), true);
  64 
  65         if (failures > 0) {
  66             throw new RuntimeException("Unexepcted enum status detected.");
  67         }
  68     }
  69 }
  70 
  71 enum SpecialEnum {
  72     RED {
  73         String special() {return "riding hood";}
  74     },
  75 
  76     GREEN;
  77 
  78     String special() {return "how was my valley";}
  79 }