ActiveX Programming Unleashed CD/AXU.iso/jgl_1_1/jgl_1_1.exe/examples/HashSet7.java

Java Source | 1996-09-10 | 993 b | 36 lines

import java.util.Enumeration;
import jgl.*;

/**
 * Using another BinaryPredicate for matching
 * <p>
 * @see jgl.HashSet
 * @version 1.1
 * @author ObjectSpace, Inc.
 */

public class HashSet7
  {
  public static void main( String[] args )
    {
    HashSet set = new HashSet( new IdenticalTo() );
    set.add( new Integer( 6 ) );
    set.add( new Integer( 1 ) );
    set.add( new Integer( 4 ) );

    // this WILL work because it is a seperate object than the other Integer(1)
    set.add( new Integer( 1 ) );
    System.out.println( set );
    System.out.println();

    System.out.println( "Add an object Integer(100)" );
    Integer tryit = new Integer(100);
    System.out.println( "add returns: " + set.add( tryit ) );
    System.out.println( "set = " + set );
    System.out.println( "Try to add the EXACT same object Integer(100)" );
    System.out.println( "add returns: " + set.add( tryit ) );
    System.out.println( "set = " + set );
    }
  }