Methods inherited from interface java.awt.event.ActionListener
Methods inherited from interface java.beans.PropertyChangeListener
Indicates whether the feature can be either on or off, without any other states. This is used by the tool bar and
menu-bar menus to determine whether the feature's enable/disable button or menu item should be displayed with an
indicator that it's either on or off. In the case of a menu the indicator is a check box. In the case of a tool
bar button the indicator is a dot above the button.
true if the feature has only two states, otherwise off.