libjava/testsuite/libjava.lang/instance.java

   1 // instance.java -- test the `instanceof' operator.
   2
   3 import java.util.EventListener;
   4
   5 public class instance implements EventListener
   6 {
   7   public static void main (String[] args)
   8   {
   9     Object x1 = new instance ();
  10     EventListener x2 = new instance ();
  11     IllegalArgumentException iae
  12       = new IllegalArgumentException ("any random class");
  13     String x3 = "zardoz";
  14     Object x4 = "zardoz";
  15
  16     // Test simple object stuff
  17     System.out.println (x1 instanceof Object);
  18     System.out.println (x1 instanceof IllegalArgumentException);
  19     System.out.println (x1 instanceof EventListener);
  20     System.out.println (x1 instanceof String);
  21     System.out.println ("=");
  22
  23     // Test with value which is an interface.
  24     System.out.println (x2 instanceof Object);
  25     System.out.println (x2 instanceof IllegalArgumentException);
  26     System.out.println (x2 instanceof EventListener);
  27     System.out.println ("=");
  28
  29     // Test with value which is a final class.
  30     System.out.println (x3 instanceof Object);
  31     System.out.println (x3 instanceof String);
  32     System.out.println ("=");
  33
  34     // Test with value which is a random class.
  35     System.out.println (iae instanceof Object);
  36     System.out.println (iae instanceof IllegalArgumentException);
  37     System.out.println (iae instanceof EventListener);
  38     System.out.println ("=");
  39
  40     // Test with value which is a final class, but not known
  41     // statically.
  42     System.out.println (x4 instanceof Object);
  43     System.out.println (x4 instanceof IllegalArgumentException);
  44     System.out.println (x4 instanceof EventListener);
  45     System.out.println (x4 instanceof String);
  46     System.out.println (x4 instanceof int[]);
  47   }
  48 }