title: Display another modal dialog box on top of other modal dialog boxes in Java
body: <p>I have a rather strange question:
  I have a Java application which uses "applications" (plugins) run in different threads.
  Most of these plugins will be written by other people and I will have no control over the code. The application requires a permanent connection to the Internet as information is constantly transferred between the server and app. What I want to do is have a thread which runs in the backround checking to see if there is a Internet connection. If the connection drops I want the ENTIRE application (and all its threads) to pause, display a message and when reconnected resume. I want this dialog box to be displayed above all other dialog boxes (modal or not). I'm thinking of something like the Windows Vista User Account Control Alerts.</p>
  
  <p>How can I do this?</p>