title: keycode for ctrl
body: <p>For multiple selection in a Jtree,I am using multiple selection mode in it.It works.But I want to know when i am making multiple selection exactly in this tree to do this i wrote a very simple keycontroller class that implements KeyListener, but i wanna check whether <kbd>CTRL</kbd> is pressed or not to do so i am using this code but it seems to be not working :</p>
  
  <pre><code>kc.getKeyCode() == KeyEvent.CTRL_DOWN_MASK ; 
  </code></pre>
  
  <p>what is the keyCode for ctrl ? Or am i doing something wrong ?</p>