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JSAMPLES.Z
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Algorithms5.java
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1998-05-08
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// Copyright(c) 1996,1997 ObjectSpace, Inc.
import com.objectspace.jgl.*;
import com.objectspace.jgl.algorithms.*;
import com.objectspace.jgl.functions.*;
import com.objectspace.jgl.predicates.*;
/**
* Filtering provides algorithms for creating a variation of a sequence.
*
* @see com.objectspace.jgl.algorithms.Filtering
* @version 3.0.0
* @author ObjectSpace, Inc.
*/
public class Algorithms5
{
public static void main( String[] args )
{
Array array1 = new Array();
array1.add( "cat" );
array1.add( "monkey" );
array1.add( "goat" );
array1.add( "elephant" );
System.out.println( "array1 = " + array1 );
// Predicate that returns true if a string is greater than 4 characters long.
UnaryPredicate predicate = new UnaryComposePredicate
(
new BindSecondPredicate( new GreaterNumber(), new Integer( 4 ) ),
new LengthString()
);
Array array2 = (Array)Filtering.select( array1, predicate );
System.out.println( "strings with length > 4 = " + array2 );
Array array3 = (Array)Filtering.reject( array1, predicate );
System.out.println( "strings with length <= 4 = " + array3 );
}
}