genderPanel = new JPanel();
genderPanel.setLayout(
  new BoxLayout(genderPanel , BoxLayout.Y_AXIS));

Height Buttons

Here is the section of the code that deals with the buttons for height. The buttons are added to (1) heightPanel, which controls their graphic representation on screen, and added to (2) heightGroup, which controls their logical operation.

One button of the heightGroup is set to be choosen by default. As with the gender buttons, BoxLayout is used in the panel to put the label and buttons in a column.

public class IdealWeight extends JFrame 
{
  JRadioButton heightA;
  JRadioButton heightB;
  JRadioButton heightC;
  JRadioButton heightD;
  JRadioButton heightE;
  ButtonGroup  heightGroup;
  JPanel       heightPanel;

  public IdealWeight()  
  { 
    // 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( _________ );
    heightGroup.add( _________ );
    heightGroup.add( _________ );
    heightGroup.add( _________ );
    heightGroup.add( _________ );
  
    heightPanel = new JPanel();
    heightPanel.setLayout(
      new BoxLayout(heightPanel,BoxLayout.Y_AXIS));
    heightPanel.add( new JLabel("Your Height") );
    heightPanel.add( _________ );
    heightPanel.add( _________ );
    heightPanel.add( _________ );
    heightPanel.add( _________ );
    heightPanel.add( _________ );
    
   . . . . .