Integer i1 = new Integer( 2 );
Integer i2 = new Integer( 2 );
HashSet set1 = new HashSet();
System.out.println( "Using equals() to compare elements..." );
System.out.println( "set1.add( i1 ) = " + set1.add( i1 ) );
System.out.println( "set1.add( i1 ) = " + set1.add( i1 ) );
System.out.println( "set1.add( i2 ) = " + set1.add( i2 ) );
System.out.println( "set1.get( i1 ) = " + set1.get( i1 ) );
System.out.println( "set1.get( i2 ) = " + set1.get( i2 ) );
HashSet set2 = new HashSet( new IdenticalTo() );
System.out.println( "Using == to compare elements..." );
System.out.println( "set2.add( i1 ) = " + set2.add( i1 ) );
System.out.println( "set2.add( i1 ) = " + set2.add( i1 ) );
System.out.println( "set2.add( i2 ) = " + set2.add( i2 ) );
System.out.println( "set2.get( i1 ) = " + set2.get( i1 ) );
System.out.println( "set2.get( i2 ) = " + set2.get( i2 ) );
