Ending a Java application from JavaScript

Hi all,

 Is it possible finish a application from JavaScript?

 I am trying something like:

 <script>
             endClass = 
java.lang.Class.forName("InfoEducacional.Virtus.Interface.EndClass");
             endObject = endClass.newInstance();
             endObject.killApplication();
 </script>

 In EndClass, I have the following method

    public static void killApplication() {
        System.exit(0);
    }


 Unfortunatelly, JFrame and system freeze.

 Is there a better way to do this?

 Something like this would be nice

<script>
    window.close();
</script>

Is it possible to handle or capture 'window.close()'?

Thanks in advance.

Guilherme Dutra