观测线程状态

package edu.wtbu;
//观察测试线程的状态
public class Demo05 {
    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) {
                    throw new RuntimeException(e);
                }
            }
            System.out.println("倒计时结束");
        });

        //观察状态
        Thread.State state = thread.getState();
        System.out.println(state);

        //观察启动后
        thread.start();
        state = thread.getState();
        System.out.println(state);

        while (state!=Thread.State.TERMINATED){//只要线程不终止，就一直输出状态
            Thread.sleep(1000);
            state = thread.getState();
            System.out.println(state);//输出线程状态
        }
    }
}