//CalculatorIfApplet.java

import javax.swing.*;

public class CalculatorIfApplet extends JApplet {

    public void init()
    {
	String input;
	int num1;
	int num2;
	String operator;
	int result=Integer.MAX_VALUE;   //largest int value
	
	input = JOptionPane.showInputDialog("Enter first integer");
	num1 = Integer.parseInt(input);

	operator = JOptionPane.showInputDialog("Enter operator (+ - * / %)");
	
	input = JOptionPane.showInputDialog("Enter second integer");
	num2 = Integer.parseInt(input);
	
	//multiway branch
	if (operator.equals("+"))
	    result = num1 + num2;
	else if (operator.equals("-"))
	    result = num1 - num2;
	else if (operator.equals("*"))
	    result = num1 * num2;
	else if (operator.equals("/"))
	    result = num1 / num2;
	else if (operator.equals("%"))
	    result = num1 % num2;
	else 
	    JOptionPane.showMessageDialog( null, "Invalid operator!");

	if (result != Integer.MAX_VALUE)	    
	    JOptionPane.showMessageDialog( null, "= " + result);
	}
}