// create two selected buttons
JToggleButton one = new JToggleButton();
one.setSelected(true);
JToggleButton two = new JToggleButton();
two.setSelected(true);
// both are selected (prints "true true")
System.out.println(one.isSelected() + " " + two.isSelected());
// put them in a group
ButtonGroup group = new ButtonGroup();
group.add(one);
group.add(two);
// Only first one is selected now (prints "true false"). This is because
// ToggleButtonModel.isSelected() first checks to see if the button is in
// a group and, if so, asks the group if it is selected.
System.out.println(one.isSelected() + " " + two.isSelected());
