home *** CD-ROM | disk | FTP | other *** search
/ PC World Komputer 1998 October A / Pcwk10a98.iso / Inprise / TRIAL / JBUILDER / JSAMPLES.Z / HashSet2.java < prev    next >
Text File  |  1998-05-08  |  1KB  |  43 lines
  1. // Copyright(c) 1996,1997 ObjectSpace, Inc.
  2. import com.objectspace.jgl.*;
  3.  
  4. /**
  5.  * Union, intersection, difference, symmetric difference, subset.
  6.  *
  7.  * @see com.objectspace.jgl.HashSet
  8.  * @version 3.0.0
  9.  * @author ObjectSpace, Inc.
  10.  */
  11.  
  12. public class HashSet2
  13.   {
  14.   public static void main( String[] args )
  15.     {
  16.     HashSet set1 = new HashSet();
  17.     set1.add( "ape" );
  18.     set1.add( "cat" );
  19.     set1.add( "bat" );
  20.  
  21.     HashSet set2 = new HashSet();
  22.     set2.add( "bat" );
  23.     set2.add( "fox" );
  24.     set2.add( "ape" );
  25.     System.out.println( "set1 = " + set1 + ", set2 = " + set2 );
  26.  
  27.     HashSet set3 = set1.union( set2 );
  28.     System.out.println( "set3 = set1.union( set2 ) = " + set3 );
  29.  
  30.     HashSet set4 = set1.intersection( set2 );
  31.     System.out.println( "set4 = set1.intersection( set2 ) = " + set4 );
  32.  
  33.     HashSet set5 = set1.difference( set2 );
  34.     System.out.println( "set5 = set1.difference( set2 ) = " + set5 );
  35.  
  36.     HashSet set6 = set1.symmetricDifference( set2 );
  37.     System.out.println( "set6 = set1.symmetricDifference( set2 ) = " + set6 );
  38.  
  39.     System.out.println( "set4.subsetOf( set3 ) = " + set4.subsetOf( set3 ) );
  40.     System.out.println( "set3.subsetOf( set4 ) = " + set3.subsetOf( set4 ) );
  41.     }
  42.   }
  43.