How Keyboard & Mouse Events are handled in java?

Hi
How Keyboard & Mouse Events are handled in java?
Kindly brief, how a key typed in the keyboard is sensed and it is entered in JTextField?
or
Pls. give me some links.
Am going to send the events from external device (like keyboard) to OS and from that I need to capture that event in Java Swing?
Pls. drop in a bit. So that it will be helpfull to me.
Thanks in advance,
bee

Actualy am very much aware of using KeyListener and MouseListener. I am in need of internal details,
how typing a key in keyboard is captured by KeyListener? How the event is passed to java swing and and it is fired to keylistener.
Pls. help me.
Thanks
bee

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    > I've taught myself enough with Flash to customize a
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