Change  the Key pressed

I have to convert a Q key to a O in an Input Text Field when the user is typing. (I have a seven segments device that will get the string later)
Thanks in advance

We are developing a low cost Hardware device that controles a door opening and it has a 5 X 7 segment
display (low cost).
| |
| |
With that display some Characters are not allowed and we are developing a Personal Computer
Java aplication in order to display the filtered message and send it to the device via RS232.
It doesn?t run:
private void jTMensajeKeyPressed(java.awt.event.KeyEvent evt) {
char MiChar = evt.getKeyChar();
if (IsValid(MiChar)){
else {
evt.setKeyCode(0);
This function is called from a piece of code like:
jTMensaje.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyPressed(java.awt.event.KeyEvent evt) {
jTMensajeKeyPressed(evt);
that is fixed by FORTE
Thanks anyway

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