/*
	Chapter 3		The Body Mass Index Calc
					Jim Miller
					September 19.2002
	Filename:		BodyMassApplet.java
	Function:		This class calculates a person's body mass based
					on his/her height and weight.
*/

import java.applet.*;
import java.awt.*;
import java.awt.event.*;


public class BodyMassApplet extends Applet implements ActionListener
{

	// declare variables
	String height, weight;
	int inches, pounds;
	double kilograms, meters, index;
	Image logo;

	// construct components
	Label companyLabel = new Label("THE SUN FITNESS CENTER BODY MASS INDEX CALCULATOR");
	Label heightLabel = new Label("Enter your height to the nearest inch:  ");
		TextField heightField = new TextField(10);
	Label weightLabel = new Label("Enter your weight to the nearest pound: ");
		TextField weightField = new TextField(10);
	Button calcButton = new Button("Calculate");
	Label outputLabel = new Label("Click the Calculate button to see your body mass index.");
	public void actionPerformed(ActionEvent e)
	{
		inches = Integer.parseInt(heightField.getText());
		pounds = Integer.parseInt(weightField.getText());
		meters = inches / 39.36;
		kilograms = pounds /2.2;
		index = kilograms / Math.pow(meters,2);
		outputLabel.setText("YOUR BODY MASS INDEX IS " + Math.round(index) + ".");
	}  // End of method actionPerformed
	public void init()
	{
		setForeground(Color.red);
		add(companyLabel);
		add(heightLabel);
		add(heightField);
		add(weightLabel);
		add(weightField);
		add(calcButton);
		calcButton.addActionListener(this);
		add(outputLabel);
		logo = getImage(getDocumentBase(), "logo.gif");
	} // End of init method
	public void paint(Graphics g)
	{
		g.drawImage(logo,125,160,this);
	} // End of paint method
} // End class BodyMassApplet