public class BasicOptionPaneUI.PropertyChangeHandler
This inner class is marked "public" due to a compiler bug.
This inner class is marked "public" due to a compiler bug. This class should be treated as a "protected" inner class. Instantiate it only within subclasses of BasicOptionPaneUI.
If the source of the PropertyChangeEvent e equals the
optionPane and is one of the ICON_PROPERTY, MESSAGE_PROPERTY,
OPTIONS_PROPERTY or INITIAL_VALUE_PROPERTY,
validateComponent is invoked.