Uses of Class
java.awt.event.HierarchyEvent

Packages that use HierarchyEvent 
Package Description
java.awt
Contains all of the classes for creating user interfaces and for painting graphics and images.
java.awt.event
Provides interfaces and classes for dealing with different types of events fired by AWT components.
javax.swing.plaf
Provides one interface and many abstract classes that Swing uses to provide its pluggable look-and-feel capabilities.