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        }    }}
————————
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        }    }}