Radio Buttons

A radio button is a group of options that can be checked, but only 1 item can be selected at a time.

The appearance of a radio button is dependent on the look and feel, but usually shows a circle followed by some text.

The user clicks on the circle to select or unselect the option and when one option is selected, the currently selected option becomes unselected.

Radio buttons are created by creating JRadioButton objects and grouping them together with a ButtonGroup.

First create the ButtonGroup and JRadioButton objects:


ButtonGroup    fruitRadioButtons = new ButtonGroup();

JRadioButton applebox = new JRadioButton("apples", true);
JRadioButton orangebox = new JRadioButton("orange", true);

Then add the radio buttons to the button group and add the radio buttons to the layout:


fruitRadioButtons.add(applebox);
fruitRadioButtons.add(orangebox);
getContentPane().add(applebox);
getContentPane().add(orangebox);