JAVA PROGRAMMING TUTORIAL 42 : USE OF init()

//init() is mainly used for launching applet in browser

import java.awt.*;

import javax.swing.*;

public class HackDefence extends JApplet{

private double sum;

public void init(){

String fn = JOptionPane.showInputDialog("Enter your first number");

String sn = JOptionPane.showInputDialog("Enter Your second number");

double n1 = Double.parseDouble(fn);

double n2 = Double.parseDouble(sn);

sum = n1 + n2;

             }

             public void paint (Graphics g){

                    super.paint(g);

                    g.drawString("The sum is "+sum, 25, 25);

              }

 }
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OUTPUT: