005.多线程-线程的生命周期

package cn.qbz.thread;

public class ThreadLifeTest {
    public static void main(String[] args) {

        Thread thread1 = new Thread(new Runnable() {
            public void run() {
                System.out.println("4.阻塞状态......");
                for (int i = 0; i < 2; i++) {
                    System.out.println("我是来阻塞的,哈哈哈......");
                }
            }
        });

        //1.新建状态 线程未被启动
        ThreadTest thread2 = new ThreadTest(thread1);
        System.out.println("1.新建状态......");
        //2.就绪状态 线程已经被启动，正在等待被分配给CPU时间片
        thread2.start();
        System.out.println("2.就绪状态......");
    }
}

class ThreadTest extends Thread {
    private Thread thread;

    public ThreadTest(Thread thread) {
        this.thread = thread;
    }

    @Override
    public void run() {
        for (int i = 0; i < 5; i++) {
            // 线程获得CPU资源正在执行任务（run()方法），
            // 此时除非此线程自动放弃CPU资源或者有优先级更高的线程进入，
            // 线程将一直运行到结束
            System.out.println("3.运行状态......");

            if (i == 2) {
                try {
                    //4.阻塞状态，等thread线程执行结束或者阻塞后，
                    //            当前线程才可以继续执行
                    thread.start();
                    thread.join();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }

        System.out.println("5.即将死亡......");
    }


}