Page 217 - CTS - CSA TP - Volume 2

COMPUTER SOFTWARE APPLICATION - CITS

4 Frame Initialization:
JFrame frame = new JFrame(“RadioButton Example”);
Create a JFrame (window) with the title “RadioButton Example”.
5 RadioButton Creation:

JRadioButton radioButton1 = new JRadioButton(“Male”); JRadioButton radioButton2 = new
JRadioButton(“Female”);
Create two JRadioButton instances with labels “Male” and “Female”.
6 ButtonGroup Setup:

ButtonGroup group = new ButtonGroup();
group.add(radioButton1);
group.add(radioButton2);
Create a ButtonGroup and add the radio buttons to it. This ensures that only one radio button in the group can
be selected at a time.
7 Submit Button Creation:
JButton submitButton = new JButton(“Submit”);

Create a JButton with the label “Submit”.
8 ActionListener for Submit Button:
submitButton.addActionListener(new ActionListener()
{ @Override public void actionPerformed(ActionEvent e)
{ String selectedOption = radioButton1.isSelected() ? “Male” : “Female”; JOptionPane.showMessageDialog(frame,
“Selected Option: “ + selectedOption); } });
Attach an ActionListener to the submit button. When the button is clicked, it checks which radio button is
selected and displays a message dialog accordingly.
9 Frame Layout and Components Addition:
frame.setLayout(new BoxLayout(frame.getContentPane(), BoxLayout.Y_AXIS)); frame.getContentPane().
add(radioButton1); frame.getContentPane().add(radioButton2); frame.getContentPane().add(submitButton);

Set the layout of the frame to a vertical box layout and add the radio buttons and the submit button to the
content pane of the frame.
10 Frame Configuration and Display:

frame.setSize(300, 200); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true);
Set the size, default close operation, and make the frame visible.
This program creates a simple GUI with two radio buttons and a submit button. Upon clicking the submit
button, a message dialog is shown, indicating the selected gender. The use of ButtonGroup ensures exclusive
selection.

202

CITS : IT & ITES - Computer Software Application - Exercise 117 CITS : IT & ITES - Computer Software Application - Exercise 117