The applet is called four times from the HTML and the source code looks like:

import java.applet.*;
import java.awt.Graphics;

public class AdditionDemo extends Applet {

	int x;
	int y;
	int answer;

	public void init() {
		resize(80, 30);
		String xText = getParameter("xvalue");
		x = Integer.parseInt(xText);
		String yText = getParameter("yvalue");
		y = Integer.parseInt(yText);
		answer = x * y;
		
	}

	public void paint(Graphics g) {
		String answerText = java.lang.Integer.toString(answer);
		g.drawString("x * y =  " + answerText, 10, 10);

	}

}