15 观测线程状态

package ThreadDemo;

// 观测线程状态，五状态
  // 死亡过的线程不能再次启动
public class Test15_State {
    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("============");
        });  // 子线程代理模式


        // 观测当前状态
        Thread.State state=thread.getState();
        System.out.println(state);

        thread.start();
        state=thread.getState();   // 更新
        System.out.println(state);

        while (state !=Thread.State.TERMINATED){
            Thread.sleep(100);
                state=thread.getState();   // 更新
                System.out.println(state);

        }

        thread.start(); // 死亡过的线程不能再次启动

    }
}