Intercepter tous les evenements clavier

import java.awt.KeyEventDispatcher;
import java.awt.KeyboardFocusManager;
import java.awt.event.KeyEvent;

/**
 * Intercepter l'appui de touche
 */
public class KeybordHook {

    public static void main(String[] args) {
        KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventDispatcher(new KeyEventDispatcher() {

            @Override
            public boolean dispatchKeyEvent(KeyEvent e) {
                // Filtre: mettre toutes les lettres en majuscules
                if (e.getID() == KeyEvent.KEY_TYPED) {
                    char c = e.getKeyChar();
                    if (Character.isLowerCase(c)) {
                        c = Character.toUpperCase(c);
                        e.setKeyChar(c);
                    }
                }
                //return true: supprime l'event de la queue de message
                return false;
            }
        });
    }
}