线程的究极玩法!

获取线程的名称

package work.february.three;

/**
 * @Author: 小浪
 * @Description:
 * @Date Created in 2021-02-03 19:58
 * @Modified By:
 */
public class Demo5 {
    public static void main(String[] args) {
        //如何获取线程的名称
        System.out.println(Thread.currentThread().getName());
        new Thread(new MyRunnable()).start();
        new Thread(new MyRunnable()).start();
        new Thread(new MyRunnable()).start();
    }
    static class MyRunnable implements Runnable{
        @Override
        public void run() {
            System.out.println(Thread.currentThread().getName());
        }
    }
}

输出如下:
main
Thread-0
Thread-2
Thread-1

线程的休眠

可以实现间隔输出 以下代码延时 休息1000ms执行一次

package work.february.three;

/**
 * @Author: 小浪
 * @Description:
 * @Date Created in 2021-02-03 20:09
 * @Modified By:
 */
public class Demo6 {
    public static void main(String[] args) throws InterruptedException {
       for(int i =0;i<10;i++){
           System.out.println(i);
           Thread.sleep(1000);
       }
    }
}

线程阻塞

所有比较消耗时间的操作,比如读取文件,也称耗时操作.

线程中断

package work.february.three;

/**
 * @Author: 小浪
 * @Description:
 * @Date Created in 2021-02-03 20:13
 * @Modified By:
 */
public class Demo7 {
    public static void main(String[] args) throws InterruptedException {
        //线程中断 自杀型 打标记
        Thread thread =new Thread(new MyRunnable());
        thread.start();
        for(int i =0;i<3;i++){
            System.out.println(Thread.currentThread().getName()+":"+i);
            Thread.sleep(1000);
        }
        //进行线程中断 自己进行处理
        thread.interrupt();

    }
    static class MyRunnable implements Runnable{

        @Override
        public void run() {
            for(int i =0;i<10;i++){
                System.out.println(Thread.currentThread().getName()+":"+i);
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                   // e.printStackTrace();
                    System.out.println("我不想死亡啊啊");
                    //进行自杀
                    return;
                }
            }
        }
    }
}

守护线程

守护线程:守护用户线程

用户线程:当一个进程不包含任何存活的用户进程时,进行死亡

在启动之前设置setDaemon(true)就可以进行守护线程!

线程安全性

package work.february.three;

/**
 * @Author: 小浪
 * @Description:
 * @Date Created in 2021-02-03 20:45
 * @Modified By:
 */
public class Demo8 {
    public static void main(String[] args) {
        //线程不安全 就会出现 不合理的现象
        MyRunnable myRunnable=new MyRunnable();
        new Thread(myRunnable).start();
        new Thread(myRunnable).start();
        new Thread(myRunnable).start();

    }
    static class MyRunnable implements Runnable{
        int count =10;
        @Override
        public void run() {
            while (count > 0) {
                System.out.println("正在准备取票:");
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                count--;
                System.out.println("出票成功,余票:" + count);
            }
        }
    }
}

这就是错误!!!

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