ExecutorService cachedThreadPool = Executors.newCachedThreadPool();
    cachedThreadPool.execute(new Runnable() {

      @Override
      public void run() {
        // TODO Auto-generated method stub

      }
    });

ExecutorService fixedThreadPool = Executors.newFixedThreadPool(5);
    fixedThreadPool.execute(new Runnable() {

      @Override
      public void run() {
        // TODO Auto-generated method stub

      }
    });

ExecutorService singleThreadExecutor = Executors.newSingleThreadExecutor();
    singleThreadExecutor.execute(new Runnable() {

      @Override
      public void run() {
        // TODO Auto-generated method stub

      }
    });

ScheduledExecutorService scheduledThreadPool = Executors.newScheduledThreadPool(5);
    scheduledThreadPool.scheduleAtFixedRate(new Runnable() {

      @Override
      public void run() {

      }
    },1, 2, TimeUnit.SECONDS);