观测线程状态

package com.pln.state;
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();
                }
            }
            System.out.println("--------------------");
        });
        //观察状态
        Thread.State state = thread.getState();
        System.out.println(state);//new状态
        //观察启动后的状态
        thread.start();
        state = thread.getState();
        System.out.println(state);//run
        while (state != Thread.State.TERMINATED){ //只要线程不终止就一直输出状态
            Thread.sleep(100);
            state = thread.getState();
            System.out.println(state);//run
        }
    }
}