线程状态观测
Thread.State
线程状态。线程可以处于以下状态之一:
-
New
尚未启动的线程处于此状态
-
Runnable
在Java虚拟机中执行的线程处于此状态
-
Blocked
被阻塞等待监视器锁定的线程处于此状态
-
Waiting
正在等待另一个线程执行特定动作的线程处于此状态
-
Timed_Waiting
正在等待另一个线程执行动作达到指定等待时间的线程处于此状态
-
Terminated
已退出的线程处于此状态
package com.li.thread_state;
//观测测试线程的状态
public class TestThreadState {
public static void main(String[] args) throws InterruptedException {
Thread thread = new Thread(()->{
for (int i = 0; i < 3; i++) {
try {
Thread.sleep(1000);//每一次循环延时
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println("已经结束了。。。");
});
//观测状态 getState()
Thread.State state = thread.getState();
System.out.println(state);//New 状态
//线程启动
thread.start();
state = thread.getState();
System.out.println(state);//Run
while (state != Thread.State.TERMINATED) {
//只要线程没停止,就一直输出状态 Thread.State.TERMINATED
Thread.sleep(100);//每输出一次延时一会,避免一下全输出出来
state = thread.getState();//更新线程状态
System.out.println(state);//输出状态
}
}
}