Need some easy Java Help

[Gib]

Hello,,, well I am learning java in school and the teacher is terrible, I have a hw assignment I have no idea how to do.

I have to finish writing the code to this program. the question is.

"The BMI applet computes a persons body mass index. BMI Applet is defined as the weight, in kg divided by the square of the height, expressed in meters. A fragment of the BMI applet is show below.

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

public class Bmi extends JApplet
implements ActionListener
{
JTextField inputLbs, inputInches, displayBmi;

public void init()
{
JLabel labelLbs = new JLabel("Weight (lbs):", SwingConstants.RIGHT);
inputLbs = new JTextField(5);
JLabel labelInches = new JLabel("Height (inches):", SwingConstants.RIGHT);
inputInches = new JTextField(5);
JLabel labelBmi = new JLabel("BMI = ", SwingConstants.RIGHT);
displayBmi = new JTextField(5);
displayBmi.setEditable(false);
JButton go = new JButton("Compute");
go.addActionListener(this);

Container c = getContentPane();
c.setBackground(Color.white);
JPanel p = new JPanel();
p.setLayout(new GridLayout(3, 2, 5, 5));
p.add(labelLbs);
p.add(inputLbs);
p.add(labelInches);
p.add(inputInches);
p.add(labelBmi);
p.add(displayBmi);
c.add(p, BorderLayout.CENTER);
c.add(go, BorderLayout.SOUTH);
}

public void actionPerformed(ActionEvent e)
{
int lbs = Integer.parseInt(inputLbs.getText());
int inches = Integer.parseInt(inputInches.getText());
double bmi = calculateBmi(lbs, inches);
DecimalFormat df = new DecimalFormat("00.0");
displayBmi.setText(df.format(bmi));
}

private double calculateBmi(int lbs, int inches)
{
< ... missing code >
}
}



I have to supply the missing code for the calculateBmi method, which takes weight in lbs and hight in inches as arguments and returns the body mass index...


ANY ideas here thanks/..

[Tekk]

Ok well I just had to rewrite this because I thought you had to create and actionPerformed method but apparently its already created!!!!

Actually this problem is very easy:

All you need to do is write a few lines of code that do all the calculations of the lbs and inches that the method is taking. For instance, if the bmi was found by adding lbs and inches then the code for that method would look as follows:

private double calculateBmi(int lbs, int inches)
{
      double total = lbs + inches;
      return total;
}


OR YOU CAN DO IT DIRECTLY...


private double calculateBmi(int lbs, int inches)
{
      return Double.parseDouble(lbs + inches);
}

Not too difficult. Just use that same methodology but you'll need to use the correct way to find the Bmi.

[muno]

I don't know anything about java or your problem, but why are you using pounds and inches when it says at the top that it has to be kilograms and meters?

[Tekk]

the teacher obviously wants them to do some conversion.

[Gib]

Thanks a lot Tekk

[Tekk]

no problem...lemme know if you need any more help

[Creosote]

?

[butch81385]

EDIT due to other EDIT. nothing to see here, move along people

[Tekk]

who you replyin to butch?