Java线程的生命周期有哪些

本篇文章为大家展示了Java 线程的生命周期有哪些，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。

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一 代码

/**
* @Title: ThreadStatus.java
* @Description: TODO(演示线程的生命状态)
*/
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import java.util.concurrent.TimeUnit;
public class ThreadStatus
{
  private static Lock lock = new ReentrantLock();
  public static void main(String[] args)
  {
    new Thread(new TimeWaiting(), "TimeWaitingThread").start();
    new Thread(new Waiting(), "WaitingThread").start();
    // 使用两个Blocked线程，一个获取锁，一个被阻塞
    new Thread(new Blocked(), "BThread-1").start();
    new Thread(new Blocked(), "BThread-2").start();
    new Thread(new Sync(), "SyncThread-1").start();
    new Thread(new Sync(), "SyncThread-2").start();
  }
  //该线程不断地进入随眠
  static class TimeWaiting implements Runnable
  {
    public void run() {
      while (true)
      {
        try {
          TimeUnit.SECONDS.sleep(5);
          System.out.println("I am TimeWaiting Thread: "+ Thread.currentThread().getName());
        } catch (InterruptedException e) { }
      }
    }
  }
  //该线程在Waiting.class实例上等待
  static class Waiting implements Runnable
  {
    public void run( )
    {
      while (true)
      {
        synchronized (Waiting.class)
        {
          try {
            System.out.println("I am Waiting Thread: "+ Thread.currentThread().getName());
            Waiting.class.wait( );
          } catch (InterruptedException e) {
            e.printStackTrace( );
          }
        }
      }
    }
  }
  //该线程在Blocked.class实例上加锁后，不会释放该锁
  static class Blocked implements Runnable
  {
    public void run( )
    {
      synchronized (Blocked.class)
      {
        while (true)
        {
          try {
            System.out.println("I am Blocked Thread: "+ Thread.currentThread().getName());
            TimeUnit.SECONDS.sleep(5);
          } catch (InterruptedException e) {}
        }
      }
    }
  }
  //该线程用于同步锁
  static class Sync implements Runnable
  {
    public void run( ) {
      lock.lock( );
      try {
        System.out.println("I am Sync Thread: "+ Thread.currentThread().getName());
        TimeUnit.SECONDS.sleep(5);
      } catch (InterruptedException e) { }
      finally {
        lock.unlock();
      }
    }
  }
}

二 运行

I am Waiting Thread: WaitingThread
I am Blocked Thread: BThread-1
I am Sync Thread: SyncThread-1
I am TimeWaiting Thread: TimeWaitingThread
I am Blocked Thread: BThread-1
I am Sync Thread: SyncThread-2
I am TimeWaiting Thread: TimeWaitingThread
I am Blocked Thread: BThread-1
I am TimeWaiting Thread: TimeWaitingThread
I am Blocked Thread: BThread-1
I am TimeWaiting Thread: TimeWaitingThread
I am Blocked Thread: BThread-1
I am TimeWaiting Thread: TimeWaitingThread
I am Blocked Thread: BThread-1
I am TimeWaiting Thread: TimeWaitingThread
I am Blocked Thread: BThread-1
I am TimeWaiting Thread: TimeWaitingThread
I am Blocked Thread: BThread-1
I am TimeWaiting Thread: TimeWaitingThread
I am Blocked Thread: BThread-1

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