// File StackDemo.java
// Henry H. Leitner
import java.util.*;

class StackDemo
{
  public static void main (String [] args)
  {
      java.util.Stack<Object> s = new java.util.Stack<Object>  ();

     s.push("foo");
     s.push("bar");
     s.push( new Integer(34) );

     System.out.println( s.pop() );
     System.out.println( s.pop() ); 
     System.out.println( s.pop() ); 
  }
}