keyboard.setOnKeyListener(new OnKeyListener() {
  public boolean onKey(View v, int keyCode, KeyEvent event) {
    if(keyCode == KeyEvent.KEYCODE_ENTER&&event.getAction()==KeyEvent.ACTION_UP){
                   out.println("enter");
                 return true;
              }
        return false;
            }
    });

private TextWatcher watcher = new TextWatcher() {
public void onTextChanged(CharSequence s, int start, int before, int count)    {
        if(count>0){
        out.println(":"+s.subSequence(start, start+count).toString());
        }
    }
            .
            .
            .

if(s.toString().substring(start).contains("n"))