How to simulate press key without keyboard

Hi,

I have a pc without keyboard that runs a Java application.

In this pc a popup is shown with these options: Ignore, Retry and Abort (with key nmemonics I, R and A).

I dont know how to simulate from a Java application a key sequence without press the keyboard. I mean, for example the java appplication must simulate a "ALT-A" key pressed and quit the popup.

Thanks in advance.

[412 byte] By [JAX82a] at [2007-11-27 10:47:02]