private void processLsCommand() {
        if (processClasses.isEmpty()) {
            System.out.println("No migratable program ");
        } else {
            System.out.println("All migratable programs:");
            System.out.println("-------------------------------");
            Iterator<Class<? extends MigratableProcess>> it = processClasses.iterator();
            while (it.hasNext()) {
                Class<? extends MigratableProcess> processClass = it.next();
                System.out.println(processClass.getSimpleName());
            }
        }
    }