Java Thread - 如何使用CyclicBarrier和TimerTask

import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.CyclicBarrier;

public class Main {
  static CyclicBarrier cb;

  public static void main(String[] args) {
    cb = new CyclicBarrier(2);
    Timer t = new Timer();
    t.schedule(new MyTimerTask(cb), 1000, 1000);
    while (true) {
      try {
        cb.await();
      } catch (Exception e) {
      }
      System.out.println("main");
    }
  }
}

class MyTimerTask extends TimerTask {
  private CyclicBarrier cb;

  public MyTimerTask(CyclicBarrier c) {
    cb = c;
  }

  public void run() {
    try {
      cb.await();
    } catch (Exception e) {
    }
  }
}