49 lines
1.6 KiB
Java
49 lines
1.6 KiB
Java
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// instance.java -- test the `instanceof' operator.
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import java.util.EventListener;
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public class instance implements EventListener
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{
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public static void main (String[] args)
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{
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Object x1 = new instance ();
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EventListener x2 = new instance ();
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IllegalArgumentException iae
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= new IllegalArgumentException ("any random class");
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String x3 = "zardoz";
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Object x4 = "zardoz";
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// Test simple object stuff
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System.out.println (x1 instanceof Object);
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System.out.println (x1 instanceof IllegalArgumentException);
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System.out.println (x1 instanceof EventListener);
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System.out.println (x1 instanceof String);
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System.out.println ("=");
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// Test with value which is an interface.
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System.out.println (x2 instanceof Object);
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System.out.println (x2 instanceof IllegalArgumentException);
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System.out.println (x2 instanceof EventListener);
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System.out.println ("=");
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// Test with value which is a final class.
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System.out.println (x3 instanceof Object);
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System.out.println (x3 instanceof String);
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System.out.println ("=");
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// Test with value which is a random class.
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System.out.println (iae instanceof Object);
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System.out.println (iae instanceof IllegalArgumentException);
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System.out.println (iae instanceof EventListener);
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System.out.println ("=");
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// Test with value which is a final class, but not known
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// statically.
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System.out.println (x4 instanceof Object);
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System.out.println (x4 instanceof IllegalArgumentException);
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System.out.println (x4 instanceof EventListener);
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System.out.println (x4 instanceof String);
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System.out.println (x4 instanceof int[]);
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}
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}
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