Clear Window

I am writing an application that will tell the user a story, that they will be interactive with, i know i need the

javax.swing.JOptionPlane...

but what dependency do i need in order to clear the window.

as in typing cls in command prompt, only this is in java.

thank you.

[303 byte] By [Tacidsky] at [2007-9-30 22:28:37]