Mouse Buttons, Modifier Keys  
Java supports up to three mouse buttons..

Mouse Listeners  
There are several styles for using the mouse listeners..

MouseMotionListener  
To implement a MouseMotionListener.

MouseListener  
A mouse button is pressed, released, or the mouse enters or leaves the area of the component with a listener..

The Mouse  
The mouse is handled automatically by most components, so you never have to know about it..