Uses of Class
javax.swing.Popup

Packages that use Popup 
Package Description
javax.swing
Provides a set of "lightweight" (all-Java language) components that, to the maximum degree possible, work the same on all platforms.
javax.swing.plaf
Provides one interface and many abstract classes that Swing uses to provide its pluggable look-and-feel capabilities.
javax.swing.plaf.multi
Provides user interface objects that combine two or more look and feels.