package com.example.demo.thread;
/**
* @projectName: demo
* @package: com.example.demo.thread
* @className: TestState
* @author:
* @description: 观察线程状态
* @date: 2021/12/7 21:35
*/
public class TestState {
public static void main(String[] args) throws InterruptedException {
Thread thread = new Thread(() -> {
for (int i = 0; i < 5; i++) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
});
// 线程状态
Thread.State state = thread.getState();
System.out.println(state);
thread.start();
state = thread.getState();
System.out.println(state);
while (thread.isAlive()){
state = thread.getState();
Thread.sleep(1000);
System.out.println(state);
}
state = thread.getState();
System.out.println(state);
// 会出现异常：死亡的线程不能再次启动！！！
thread.start();
}
}
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