Java 线程关闭

Java线程关闭的方式

1.使用状态位

public class CloseThread extends Thread {
    boolean flag = true;
    int index=0;
    @Override
    public void run() {
        while (flag){
            System.out.println(index);
            index++;
            if(index==5){
                stopThread();
            }

        }
    }
    public void stopThread(){
        flag = false;
    }
    public static void main(String[] args) {
        CloseThread ct = new CloseThread();
        ct.start();
//        for (int i =0 ; i < 6; i++){
//            System.out.println(i);
//        }
//        ct.stopThread();
    }
}

2.通过关闭资源的方式，让异常处理部分去修改flag

public class CloseThread1 extends Thread {
    boolean flag = true;
    Scanner sc = new Scanner(System.in);
    @Override
    public void run() {
        while (flag){
            try{
                sc.next();
            }catch (Exception e){
                flag = false;
                System.out.println("线程停止");
            }
        }
    }

    public static void main(String[] args) {
        CloseThread1 t = new CloseThread1();
        t.start();
        for (int i = 0; i <= 5; i++){
            System.out.println(i);
        }
        t.sc.close();//通过关闭资源的方式,让异常处理部分去修改flag

    }
}

3.创造外部因素，使线程抛出异常

public class CloseThread2 extends  Thread {
    boolean flag = true;

    @Override
    public void run() {
        while (flag){
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {//线程中断异常
                flag = false;
                System.out.println("线程停止");
            }
        }
    }

    public static void main(String[] args) {
        CloseThread2 c = new CloseThread2();
        c.start();
        //创造外部因素，使线程抛出异常
        c.interrupt();
    }
}

注：仅供个人学习理解