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I ported my midlet to Blackberry and I can't assign a listener to the ESCAPE key
import net.rim.device.api.system.KeyListener;
import net.rim.device.api.ui.Keypad;

public class PhraZApp extends javax.microedition.midlet.MIDlet implements ActionListener{

public PhraZApp {
 addKeyListener (new KeyPadListener());
}


 protected void keyPressed(int key) {
    System.out.println(key);
}

public void actionPerformed(ActionEvent evt) {
    System.out.println(evt.getKeyEvent());
}

 public final class KeyPadListener implements KeyListener {

    public boolean keyChar(char key, int status, int time) {

        return false;
    }

    public boolean keyDown(int keycode, int time) {
        if (Keypad.KEY_ESCAPE == Keypad.key(keycode)) {
                  System.out.println("key: " + keycode);
        return true;
    }
            //let the system to pass the event to another listener.
    return false;
    }

    public boolean keyUp(int keycode, int time) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    public boolean keyRepeat(int keycode, int time) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    public boolean keyStatus(int keycode, int time) {
        throw new UnsupportedOperationException("Not supported yet.");
    }
}

Command backCommand = new Command("",Keypad.KEY_ESCAPE);
form.setBackCommand(backCommand);

public void actionPerformed(ActionEvent evt) {

    if (evt.getCommand().getId() ==Keypad.KEY_ESCAPE){
        //execution code
    }