public static void main(String[] args)  {
        schedulerOne();
        schedulerTwo();
        schedulerThree();
    }

private static void schedulerOne() {
        ThreadFactory namedThreadFactory = new ThreadFactoryBuilder().setNameFormat("thread-one").build();
        ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1, namedThreadFactory);
        Runnable sender = () -> {

                SqlSession sqlSession = SqlMapHelper.getSqlSessionFactory().openSession(true);
                try {
                    sqlSession.selectOne("selectTest");
                } catch (Exception e) {
                } finally {
                    sqlSession.close();
                }

        };
        scheduler.scheduleAtFixedRate(sender, 60, 30, TimeUnit.SECONDS);
    }

private static void schedulerTwo() {
        ThreadFactory namedThreadFactory = new ThreadFactoryBuilder().setNameFormat("thread-two").build();
        ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1, namedThreadFactory);
        Runnable sender = () -> {

                SqlSession sqlSession = SqlMapHelper.getSqlSessionFactory().openSession(true);
                try {
                    sqlSession.selectOne("selectTest");
                } catch (Exception e) {
                } finally {
                    sqlSession.close();
                }

        };
        scheduler.scheduleAtFixedRate(sender, 3, 3, TimeUnit.SECONDS);
    }

private static void schedulerThree() {
        ThreadFactory namedThreadFactory = new ThreadFactoryBuilder().setNameFormat("thread-three").build();
        ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1, namedThreadFactory);
        Runnable sender = () -> {

                SqlSession sqlSession = SqlMapHelper.getSqlSessionFactory().openSession(true);
                try {
                    sqlSession.selectOne("selectTest");
                } catch (Exception e) {
                } finally {
                    sqlSession.close();
                }

        };
        scheduler.scheduleAtFixedRate(sender, 5, 5, TimeUnit.SECONDS);
    }