lockSupport

public static void main(String[] args)
  {
      Thread t1 = new Thread(() -> {
          try { TimeUnit.SECONDS.sleep(3); } catch (InterruptedException e) { e.printStackTrace(); }
          System.out.println(Thread.currentThread().getName() + "\t ----come in"+System.currentTimeMillis());
          LockSupport.park();
          System.out.println(Thread.currentThread().getName() + "\t ----被唤醒"+System.currentTimeMillis());
      }, "t1");
      t1.start();

      //暂停几秒钟线程
      //try { TimeUnit.SECONDS.sleep(1); } catch (InterruptedException e) { e.printStackTrace(); }

      new Thread(() -> {
          LockSupport.unpark(t1);
          System.out.println(Thread.currentThread().getName()+"\t ----发出通知");
      },"t2").start();

  }

  private static void lockAwaitSignal()
  {
      Lock lock = new ReentrantLock();
      Condition condition = lock.newCondition();

      new Thread(() -> {
          try { TimeUnit.SECONDS.sleep(1); } catch (InterruptedException e) { e.printStackTrace(); }
          lock.lock();
          try
          {
              System.out.println(Thread.currentThread().getName()+"\t ----come in");
              condition.await();
              System.out.println(Thread.currentThread().getName()+"\t ----被唤醒");
          } catch (InterruptedException e) {
              e.printStackTrace();
          } finally {
              lock.unlock();
          }
      },"t1").start();

      //暂停几秒钟线程
      //try { TimeUnit.SECONDS.sleep(1); } catch (InterruptedException e) { e.printStackTrace(); }

      new Thread(() -> {
          lock.lock();
          try
          {
              condition.signal();
              System.out.println(Thread.currentThread().getName()+"\t ----发出通知");
          }finally {
              lock.unlock();
          }
      },"t2").start();
  }

  private static void syncWaitNotify()
  {
      Object objectLock = new Object();

      new Thread(() -> {
          try { TimeUnit.SECONDS.sleep(1); } catch (InterruptedException e) { e.printStackTrace(); }
          synchronized (objectLock){
              System.out.println(Thread.currentThread().getName()+"\t ----come in");
              try {
                  objectLock.wait();
              } catch (InterruptedException e) {
                  e.printStackTrace();
              }
              System.out.println(Thread.currentThread().getName()+"\t ----被唤醒");
          }
      },"t1").start();

      //暂停几秒钟线程
      //try { TimeUnit.SECONDS.sleep(1); } catch (InterruptedException e) { e.printStackTrace(); }

      new Thread(() -> {
          synchronized (objectLock){
              objectLock.notify();
              System.out.println(Thread.currentThread().getName()+"\t ----发出通知");
          }
      },"t2").start();
  }