/**
 * File name: WageCalculatorApplet.java
 * Author: Hongyan Wang.   Modified by David Wills to applet
 *
 * Description: The program accepts an employee's pay rate and number of hours 
 * worked in a week, and calculates the wage the employee earned for that week. 
 *
 * Others: The program has minimum error checking. It doesn't check the validity 
 * of number of hours worked. The program uses JOptionPane for input.
 */

import java.text.*;				// to use DecimalFormat
import javax.swing.*;
import java.awt.Graphics;


public class WageCalculatorApplet extends JApplet
{
    // Constants
    private static final double MAX_HOURS = 40.0;   // Maximum normal work hours
    private static final double OVERTIME = 1.5;     // Overtime pay rate factor
    
    double wages;         // Wages earned
    
    
    public void init () 
    {
	double payRate;       // Employee's pay rate
    	double hours;         // Hours worked
	String input;
	
	
	// Get info. 
	input = JOptionPane.showInputDialog ("Enter pay rate: ");     
	payRate = Double.parseDouble( input );	
	
	input = JOptionPane.showInputDialog ("Enter hours worked: ");
	hours = Double.parseDouble( input );                        
	
	// Calculate wage based on pay rate and hours worked
	if (hours > MAX_HOURS)                  // Is there overtime?
	    wages = (MAX_HOURS * payRate) +     // Yes
		(hours - MAX_HOURS) * payRate * OVERTIME;
	else
	    wages = hours * payRate;			// No
    }	    
    
    
    public void paint ( Graphics g ) {
	super.paint( g ); 
	
	// Display the result
	DecimalFormat	d2 = new DecimalFormat ("0.00");
	
	g.drawString ("The wage should be " + d2.format (wages), 100, 100);
    }
}