title: How to detect that a PC has been idle for 30 seconds using Java?
body: <p>How to detect that a PC has been idle for 30 seconds using Java?</p>
  
  <p>EDITED</p>
  
  <p>With idle I mean that there are no user activity. The user does nothing in 30 seconds. I wold like to do an apllication like Windows, that detects that the user does nothing and enter in stad-by.</p>