Someone will know the answer

I have written a program using menu driving array processing,
the last thing option that comes up on screen is to exit the program.... but in code how can i write this so the user can press 8 hit enter and the program will finish or shut?
also how do you write informatoin to a text file? any bits of code will be much apprieciated...
Thank you

Read these:
Timer
KeyListener
BufferedWriter
Tutorial: Java IO
Tutorial: Writing Event Listeners
Good luck.

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