Thread: Help with radio buttons and results.

I need help completing this Ideal weight calculator where the formula is
Use the approximate formula:

W = H2 / 30 , for female

W = H2 / 28 , for male
where W is the ideal weight in pounds, H is the height in inches. The ideal weight will display in the JLabel text box. I can not figure out where to input the action listeners to correspond with the formula. The code compiles but the buttons do not display the ideal weight.
My code so far is:

import java.awt.* ;
import java.awt.event.*;
import javax.swing.*;
 
public class Assignment4_Cheshire extends JFrame
{
  JRadioButton genderM, genderF;
  ButtonGroup  genderGroup;
  JPanel       genderPanel;
 
  JRadioButton heightA, heightB, heightC, heightD, heightE;
  ButtonGroup  heightGroup;
  JPanel       heightPanel;
 
  JTextField   resultText;
  JLabel       resultLabl;
  JPanel       resultPanel;
 
  public Assignment4_Cheshire()
  {
    setTitle( "Your Ideal Weight" );
    setDefaultCloseOperation( EXIT_ON_CLOSE );
 
    // gender group
    genderM = new JRadioButton("Male", true );
    genderF = new JRadioButton("Female", false );
    genderGroup = new ButtonGroup();
    genderGroup.add( genderM );
    genderGroup.add( genderF );
    genderPanel = new JPanel();
    genderPanel.setLayout( new BoxLayout( genderPanel, BoxLayout.Y_AXIS ) );
    genderPanel.add( new JLabel("Your Gender") );
    genderPanel.add( genderM );  genderPanel.add( genderF );
 
    // height group
    heightA = new JRadioButton("60 to 64 inches", true );
    heightB = new JRadioButton("64 to 68 inches", false );
    heightC = new JRadioButton("68 to 72 inches", false );
    heightD = new JRadioButton("72 to 76 inches", false );
    heightE = new JRadioButton("76 to 80 inches", false );
 
    heightGroup = new ButtonGroup();
    heightGroup.add( heightA ); heightGroup.add( heightB );
    heightGroup.add( heightC ); heightGroup.add( heightD );
    heightGroup.add( heightE );
 
    heightPanel = new JPanel();
    heightPanel.setLayout( new BoxLayout( heightPanel, BoxLayout.Y_AXIS ) );
    heightPanel.add( new JLabel("Your Height") );
    heightPanel.add( heightA ); heightPanel.add( heightB );
    heightPanel.add( heightC ); heightPanel.add( heightD );
    heightPanel.add( heightE );
 
    // result panel
    resultText  = new JTextField(7);
    resultText.setEditable( false );
    resultLabl  = new JLabel("Ideal Weight");
    resultPanel = new JPanel();
    resultPanel.add( resultLabl );
    resultPanel.add( resultText );
 
    // frame
    setLayout( new BorderLayout() );
    add( genderPanel, BorderLayout.WEST );
    add( heightPanel, BorderLayout.EAST );
    add( resultPanel, BorderLayout.SOUTH  );
 
  }
 
  public static void main ( String[] args )
  {
    Assignment4_Cheshire weightApp  = new Assignment4_Cheshire() ;
    weightApp.setSize( 250, 225 );
    weightApp.setResizable( false );
    weightApp.setVisible( true );
  }
}

Any guidance will be appreciacted.

thanks
Samantha

There may be a better way but you could always use the boolean method isSelected() for the RadioButtons.

Also, how is your formula supposed to work for a range?

if (genderM.isSelected())
{
if (heightA.isSelected())
{
Double temp = Math.pow(60,2) /28;
resultText.setText(temp.toString());
}

Thank you for the reply.

The height range is used to calculate the weight range for either male or female.

I have tried to get the radio buttons to work and I am still stuck. not sure where to add the calculations in.

import java.awt.* ;
import java.awt.event.*;
import javax.swing.*;
 
public class Assignment4_Cheshire extends JFrame
{
  JRadioButton genderM, genderF;
  ButtonGroup  genderGroup;
  JPanel       genderPanel;
 
  JRadioButton heightA, heightB, heightC, heightD, heightE;
  ButtonGroup  heightGroup;
  JPanel       heightPanel;
 
  JTextField   resultText;
  JLabel       resultLabl;
  JPanel       resultPanel;
 
  public Assignment4_Cheshire()
  {
    setTitle( "Your Ideal Weight" );
    setDefaultCloseOperation( EXIT_ON_CLOSE );
 
    // gender group
    genderM = new JRadioButton("Male", true );
    genderF = new JRadioButton("Female", false );
    genderGroup = new ButtonGroup();
    genderGroup.add( genderM );
    genderGroup.add( genderF );
    genderPanel = new JPanel();
    genderPanel.setLayout( new BoxLayout( genderPanel, BoxLayout.Y_AXIS ) );
    genderPanel.add( new JLabel("Your Gender") );
    genderPanel.add( genderM );  genderPanel.add( genderF );
 
    // height group
    heightA = new JRadioButton("60 to 64 inches", true );
    heightB = new JRadioButton("64 to 68 inches", false );
    heightC = new JRadioButton("68 to 72 inches", false );
    heightD = new JRadioButton("72 to 76 inches", false );
    heightE = new JRadioButton("76 to 80 inches", false );
 
    heightGroup = new ButtonGroup();
    heightGroup.add( heightA ); heightGroup.add( heightB );
    heightGroup.add( heightC ); heightGroup.add( heightD );
    heightGroup.add( heightE );
 
    heightPanel = new JPanel();
    heightPanel.setLayout( new BoxLayout( heightPanel, BoxLayout.Y_AXIS ) );
    heightPanel.add( new JLabel("Your Height") );
    heightPanel.add( heightA ); heightPanel.add( heightB );
    heightPanel.add( heightC ); heightPanel.add( heightD );
    heightPanel.add( heightE );
 
    // result panel
    resultText  = new JTextField(7);
    resultText.setEditable( false );
    resultLabl  = new JLabel("Ideal Weight");
    resultPanel = new JPanel();
    resultPanel.add( resultLabl );
    resultPanel.add( resultText );
 
    // frame
    setLayout( new BorderLayout() );
    add( genderPanel, BorderLayout.WEST );
    add( heightPanel, BorderLayout.EAST );
    add( resultPanel, BorderLayout.SOUTH  );
 
  }
 
  public static void main ( String[] args )
  {
    Assignment4_Cheshire weightApp  = new Assignment4_Cheshire() ;
    weightApp.setSize( 250, 225 );
    weightApp.setResizable( false );
    weightApp.setVisible( true );
  }
}