AWT Components -- Radio Buttons , CheckboxGroup
Radio buttons are identical to Checkboxes but grouped so that only one checkbox in a group can be on at a time. They use same class for checkboxes, but add CheckboxGroup class.
- CheckboxGroup cbg = new CheckboxGroup();
- cb1 = new Checkbox("Red", cbg, false));
- cb2 = new Checkbox("Green", cbg, false));
- cb3 = new Checkbox("Blue", cbg, true));
- add(cb1); add(cb2); add(cb3);
In addition to checking the state of checkboxes in a group, there is a method to return the one checkbox which is on:
- cb = cbg.getSelectedCheckbox();