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  • java中断线程的两种方式

    方式一:使用interrupt

    public static void main(String[] args) {
            MyRunable myRunable = new MyRunable();
            Thread thread = new Thread(myRunable);
            thread.start();
            for (int i = 0;i < 50;i++){
                System.out.println(Thread.currentThread().getName()+"-"+i);
                try {
                    Thread.sleep(300);          //线程休眠,会让出cpu时间片(让同一进程中其余线程占用cpu时间片)
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                if(i == 20){
                    thread.interrupt();             //在自定义线程上打了一个中断标记
                }
            }
        }
    class MyRunable implements Runnable{
    
        @Override
        public void run() {
            for (int i = 0;i< 50;i++){
                if(Thread.interrupted()){      //interrupted方法会清除中断标记
                    break;
                }
                System.out.println(Thread.currentThread().getName()+"-"+i);
                try {
                    Thread.sleep(300);        //sleep方法也会清除中断标记并报错
                } catch (InterruptedException e) {
                    e.printStackTrace();
                    Thread.currentThread().interrupt();        //在报错的地方继续添加中断标记在循环判断的时候会中断该循环
                }
            }
        }
    }

    方式二:使用中断标记(更常用,更好理解)

    public static void main(String[] args) {
            MyRunable myRunable = new MyRunable();
            Thread thread = new Thread(myRunable);
            thread.start();
            for (int i = 0;i < 50;i++){
                System.out.println(Thread.currentThread().getName()+"-"+i);
                try {
                    Thread.sleep(300);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                if(i == 20){
                    myRunable.flag = false;
                }
            }
        }
    class MyRunable implements Runnable{
        public boolean flag = true;
        
        @Override
        public void run() {
            int i = 0;
            while (flag){
                System.out.println(Thread.currentThread().getName()+"-"+(i++));
                try {
                    Thread.sleep(300);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }
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  • 原文地址:https://www.cnblogs.com/wscw/p/14512767.html
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