Answer:
1
Explanation:
The maximum number of radio buttons that can be selected within a ButtonGroup is 1.
For example, in the following code segment we create a button group btn_group consisting of 5 buttons.
ButtonGroup btn_group = new ButtonGroup();
btn_group.add(btn_one);
btn_group.add(btn_two);
btn_group.add(btn_three);
btn_group.add(btn_fours);
btn_group.add(btn_five);
Buttongroup ensures that a maximum of one button is selected at any given point of time.
