private void init() {
this.applicationChecker = new ApplicationChecker(this);
this.applicationCheckerThread =
new Thread(this.applicationChecker, "memory checker");
this.shutdownHook = new ShutdownHook();
this.shutdownHook.addShutdownHookListener(this);
this.shutdownHook.addShutdownHookListener(this.applicationChecker);
this.shutdownHookThread =
new Thread(shutdownHook, SHUTDOWN_HOOK_NAME);
}