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Java Source  |  1998-05-08  |  1.1 KB  |  35 lines
  1. // Copyright(c) 1996,1997 ObjectSpace, Inc.
  2. import com.objectspace.jgl.*;
  3.  
  4. public class Sets6
  5.   {
  6.   public static void main( String[] args )
  7.     {
  8.     HashSet set1 = new HashSet();
  9.     set1.add( "ape" );
  10.     set1.add( "dog" );
  11.     set1.add( "bat" );
  12.  
  13.     HashSet set2 = new HashSet();
  14.     set2.add( "bat" );
  15.     set2.add( "fox" );
  16.     set2.add( "ape" );
  17.     System.out.println( "set1 = " + set1 + ", set2 = " + set2 );
  18.  
  19.     HashSet set3 = set1.union( set2 );
  20.     System.out.println( "set3 = set1.union( set2 ) = " + set3 );
  21.  
  22.     HashSet set4 = set1.intersection( set2 );
  23.     System.out.println( "set4 = set1.intersection( set2 ) = " + set4 );
  24.  
  25.     HashSet set5 = set1.difference( set2 );
  26.     System.out.println( "set5 = set1.difference( set2 ) = " + set5 );
  27.  
  28.     HashSet set6 = set1.symmetricDifference( set2 );
  29.     System.out.println( "set6 = set1.symmetricDifference( set2 ) = " + set6 );
  30.  
  31.     System.out.println( "set4.subsetOf( set3 ) = " + set4.subsetOf( set3 ) );
  32.     System.out.println( "set3.subsetOf( set4 ) = " + set3.subsetOf( set4 ) );
  33.     }
  34.   }
  35.