老师,请问为什么thread-0对应的状态显示是sleeping ，而不是六种线程状态里面的timed_waiting

Question

Answer 1

悟空 2020-04-11 14:26:22

dubugger显示的状态不是6种线程状态，你需要用System.out.println把状态打印出来来看

Answer 2

悟空 2020-04-11 09:54:57

复制一下完整代码吧

• 提问者 Sivel #1

  package threadcoreknowledge.threadobjectclasscommonmethods;
  
  /**
   * 描述：     先join再mainThread.getState()
   * 通过debugger看线程join前后状态的对比
   */
  public class JoinThreadState {
      public static void main(String[] args) throws InterruptedException {
          Thread mainThread = Thread.currentThread();
          Thread thread = new Thread(new Runnable() {
              @Override
              public void run() {
                  try {
                      Thread.sleep(3000);
                      System.out.println(mainThread.getState());
                      System.out.println("Thread-0运行结束");
                  } catch (InterruptedException e) {
                      e.printStackTrace();
                  }
              }
          });
          thread.start();
          System.out.println("等待子线程运行完毕");
          thread.join();
          System.out.println("子线程运行完毕");
  
      }
  }