Ecco un seplice esempio:

codice:
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
/*<applet code="SimpleKey" widht=300 height=100>
</applet>
*/

public class SimpleKey extends Applet implements KeyListener{
String msg="";
int X=10, Y=20;//coordinate di output
public void init(){
addKeyListener(this);
requestFocus();
setBackground(Color .green);
setForeground(Color.red);
}

public void keyPressed(KeyEvent ke){
showStatus("Tasto schiacciato");
}

public void keyReleased(KeyEvent ke){
showStatus ("Tasto mollato");
}
public void keyTyped(KeyEvent ke){
msg +=ke.getKeyChar();
repaint();
}

public void paint(Graphics g){
g.drawString(msg, X, Y);
}
}
Spero ke ti serva.....
ciao