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BUG 15
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BUGCD1998_06.ISO
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aplic
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jbuilder
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jsamples.z
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HashMap4.java
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1997-07-30
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// Copyright(c) 1996,1997 ObjectSpace, Inc.
import java.util.Enumeration;
import COM.objectspace.jgl.*;
/**
* Construction, enumeration, access, acceptance of duplicates.
*
* @see COM.objectspace.jgl.HashMap
* @version 2.0.2
* @author ObjectSpace, Inc.
*/
public class HashMap4
{
public static void main( String[] args )
{
HashMap map = new HashMap( true ); // allow duplicates
map.add( new Integer( 2 ), "two" );
map.add( new Integer( 4 ), "four" );
System.out.println( map );
System.out.println();
System.out.println( "Enumerate the HashMap" );
Enumeration e = map.elements();
while ( e.hasMoreElements() )
System.out.println( e.nextElement() );
System.out.println();
System.out.println( "Iterate through the HashMap" );
for ( HashMapIterator i = map.begin(); !i.atEnd(); i.advance() )
System.out.println( i.get() + ", key = " + i.key() + ", value = " + i.value() );
System.out.println();
System.out.println( "Show that duplicates can be added." );
map.add( new Integer( 8 ), "eight" );
System.out.println( "map = " + map );
map.add( new Integer( 4 ), "FOUR" );
System.out.println( "map = " + map );
System.out.println( "Show that even with duplicates, put() does a replacement." );
map.put( new Integer( 4 ), "FoUr" );
System.out.println( "map = " + map );
}
}