/**

      * Terminates the currently running Java Virtual Machine. The

      * argument serves as a status code; by convention, a nonzero status

      * code indicates abnormal termination.

      * <p>

      * This method calls the <code>exit</code> method in class

      * <code>Runtime</code>. This method never returns normally.

      * <p>

      * The call <code>System.exit(n)</code> is effectively equivalent to

      * the call:

      * <blockquote><pre>

      * Runtime.getRuntime().exit(n)

      * </pre></blockquote>

      *

      * @param      status   exit status.

      * @throws  SecurityException

      *        if a security manager exists and its <code>checkExit</code>

      *        method doesn't allow exit with the specified status.

      * @see        java.lang.Runtime#exit(int)

      */

     public static void exit(int status) {

     Runtime.getRuntime().exit(status);

     }