Used to display a "Tip" for a Component. Typically components provide api to automate the process of using ToolTips. For example, any Swing component can use the JComponent setToolTipText method to specify the text for a standard tooltip. A component that wants to create a custom ToolTip display can override JComponent's createToolTip method and use a subclass of this class.
For the keyboard keys used by this component in the standard Look and Feel (L&F) renditions, see the JToolTip key assignments.
See How to Use Tool Tips in The Java Tutorial for further documentation.