/* ==========================================================
   This demo program uses Java's generic Stack class
   ========================================================== */
import java.util.Stack;
import java.util.Arrays;

public class Demo
{
    public static void main(String[] args)
    {
	String[] input = {"3", "4", "+"};

	int result = RPN.evalRPN(input);

	System.out.println(Arrays.toString(input) + " ---> " + result );
    }
}