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JSAMPLES.Z
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HashSet4.java
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1998-05-08
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// Copyright(c) 1996,1997 ObjectSpace, Inc.
import com.objectspace.jgl.*;
import java.util.Enumeration;
/**
* Construction, enumeration, acceptance of duplicates.
*
* @see com.objectspace.jgl.HashSet
* @version 3.0.0
* @author ObjectSpace, Inc.
*/
public class HashSet4
{
public static void main( String[] args )
{
HashSet set = new HashSet( true ); // allow duplicates
set.add( new Integer( 6 ) );
set.add( new Integer( 1 ) );
set.add( new Integer( 4 ) );
set.add( new Integer( 1 ) );
System.out.println( set );
System.out.println();
System.out.println( "Enumerate the HashSet" );
Enumeration e = set.elements();
while ( e.hasMoreElements() )
System.out.println( e.nextElement() );
System.out.println();
System.out.println( "Iterate through the HashSet" );
for ( HashSetIterator i = set.begin(); !i.atEnd(); i.advance() )
System.out.println( i.get() );
System.out.println();
System.out.println( "Show that duplicates can be added." );
set.add( new Integer( 8 ) );
System.out.println( "set = " + set );
set.add( new Integer( 4 ) );
System.out.println( "set = " + set );
}
}