//Given the length and width of a rectangle, this Java
//program determines its area and perimeter.

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class RectangleProgram extends JFrame
{
    JLabel lengthL, widthL,
           areaL, perimeterL;
    JTextField lengthTF, widthTF,
		           areaTF, perimeterTF;
    JButton calculateB, exitB;
    CalculateButtonHandler calculateHandler;
    ExitButtonHandler exitHandler;

    private static final int WIDTH = 400;
    private static final int HEIGHT = 300;

    public RectangleProgram()
    {
		        // Create four labels
	      lengthL = new JLabel("Enter height in inches: ",
 	                            SwingConstants.RIGHT);
	      widthL = new JLabel("Enter the weight in lbs: ",
				                     SwingConstants.RIGHT);
	      areaL = new JLabel("BMI: ",SwingConstants.RIGHT);
	      perimeterL = new JLabel("Diagnosis: ",
 				                       	SwingConstants.RIGHT);

		          //Create four textfields
	      lengthTF = new JTextField(10);
	      widthTF = new JTextField(10);
	      areaTF = new JTextField(10);
	      perimeterTF = new JTextField(10);

		          //create Calculate Button
	      calculateB = new JButton("Calculate");
	      calculateHandler = new CalculateButtonHandler();
	      calculateB.addActionListener(calculateHandler);

		          //Create Exit Button
	      exitB = new JButton("Exit");
	      exitHandler = new ExitButtonHandler();
	      exitB.addActionListener(exitHandler);

		          //Set the title of the window
	      setTitle("Body Mass Index Calculator");

		          //Get the container
	      Container pane = getContentPane();

		          //Set the layout
        pane.setLayout(new GridLayout(5,2));

		          //Place all items created
	      pane.add(lengthL);
	      pane.add(lengthTF);
	      pane.add(widthL);
	      pane.add(widthTF);
	      pane.add(areaL);
	      pane.add(areaTF);
	      pane.add(perimeterL);
	      pane.add(perimeterTF);
	      pane.add(calculateB);
			pane.add(exitB);

		        //set the size of the window and display it
	      setSize(WIDTH,HEIGHT);
	      setVisible(true);
			  setDefaultCloseOperation(EXIT_ON_CLOSE);
    }

    private class CalculateButtonHandler implements ActionListener
    {
	      public void actionPerformed(ActionEvent e)
	      {
	          double weight, height, bmi;
				 String diagnosis;
				 

	          height = Double.parseDouble(lengthTF.getText());
	          weight = Double.parseDouble(widthTF.getText());
	          bmi = 703 * (weight / Math.pow(height,2));
				
				
				diagnosis = "What do you think?";
				if(bmi < 18.5)
				{
					diagnosis = "underweight";
					}
					else if (bmi < 25)
					{
						diagnosis = "normal";
					}
					else if (bmi < 30)
					{
						diagnosis = "overweight";
					}
					else 
					{
						diagnosis = "obese";
					}
					
					
				
				
				
				
				
				 
				 //Rectangle r = new Rectangle((int)length, (int)width);
				 //area = r.computeArea();
				 //perimeter = r.computePerimeter();

	          areaTF.setText("You're bmi is " + bmi);
	          perimeterTF.setText(diagnosis);
	      }
    }

    private class ExitButtonHandler implements ActionListener
    {
	      public void actionPerformed(ActionEvent e)
	      {
		        System.exit(0);
	      }
    }

    public static void main( String args[] )
    {
	        RectangleProgram rectObject = new RectangleProgram();
    }
}