title: Sandbox against malicious code in a Java application
body: <p>In a simulation server environment where users are allowed to submit their own code to be run by the server, it would clearly be advantageous for any user-submitted code to be run in side a sandbox, not unlike Applets are within a browser.  I wanted to be able to leverage the JVM itself, rather than adding another VM layer to isolate these submitted components.</p>
  
  <p>This kind of limitation appears to be possible using the existing Java sandbox model, but is there a dynamic way to enable that for just the user-submitted parts of a running application?</p>