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JGL - The Generic Collection Library for Java
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Stack examples

Stack1 - Construction, enumeration, pushing, popping.

Stack2 - Using a Vector as the underlying Sequence.

Stack1 Example Code

// Copyright(c) 1996,1997 ObjectSpace, Inc.
import com.objectspace.jgl.*;
import java.util.Enumeration;

/**
 * Construction, enumeration, pushing, popping.
 *
 * @see com.objectspace.jgl,Stack
 * @version 3.0.0
 * @author ObjectSpace, Inc.
 */

public class Stack1
  {
  public static void main( String[] args )
    {
    // Use an Slist as the underlying data structure.
    Stack stack = new Stack();
    stack.push( "bat" );
    stack.push( "cat" );
    stack.push( "dog" );

    System.out.println( "Print the Stack." );
    System.out.println( stack );
    System.out.println();

    System.out.println( "Non-destructively enumerate the Stack." );
    Enumeration e = stack.elements();
    while ( e.hasMoreElements() )
      System.out.println( e.nextElement() );
    System.out.println();

    System.out.println( "Pop and print each element." );
    while ( !stack.isEmpty() )
      System.out.println( stack.pop() );
    }
  }

Stack1 Example Output

Print the Stack.
Stack( Array( bat, cat, dog ) )

Non-destructively enumerate the Stack.
bat
cat
dog

Pop and print each element.
dog
cat
bat

Stack2 Example Code

// Copyright(c) 1996,1997 ObjectSpace, Inc.
import com.objectspace.jgl.*;

/**
 * Using a Vector as the underlying Sequence.
 *
 * @see com.objectspace.jgl.util.util.Stack
 * @version 3.0.0
 * @author ObjectSpace, Inc.
 */

public class Stack2
  {
  public static void main( String[] args )
    {
    // Use a Array as the underlying data structure.
    Stack stack = new Stack( new Array() );
    stack.push( "bat" );
    stack.push( "cat" );
    stack.push( "dog" );

    System.out.println( "Print the Stack." );
    System.out.println( stack );
    }
  }

Stack2 Example Output

Print the Stack.
Stack( Array( bat, cat, dog ) )
 
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