123. how to stop a thread?

Thread stop , How to stop a thread ?

stop Potential safety hazard , Outdated !
[1] adopt control run() Method , To control the thread termination ;

class Demo3 extends Thread{
    
    // By controlling run Method , To control the thread termination 
    private boolean isrun;
    public boolean isIsrun(){
    
        return isrun;
    }
    public void setIsrun(boolean isrun){
    
        this.isrun = isrun;
    }
    @SneakyThrows
    @Override
    public void run(){
    
        while (isrun){
    
            Thread.sleep(400);
            System.out.println(" Thread running ！");
        }
        System.out.println(" Sub thread running :"+ System.currentTimeMillis());
    }
}
class Demo4{
    
    public static void main(String[] args) throws InterruptedException {
    
        Demo3 demo3 = new Demo3();
        // By controlling the dead loop method in the thread 
        demo3.setIsrun(true);
        demo3.start();
        Thread.sleep(5000);
        demo3.setIsrun(false);
    }
}

[2] Through threads interrupt() 【 principle 】 Controls how exceptions are thrown , Execution of control methods ;

class Demo4{
    
    public static void main(String[] args) throws InterruptedException {
    
        // Through threads interrupt Control the end of the thread 
        //1. Create a thread 
        Thread thread = new Thread(()->{
    
           while (true){
    
               try{
    
                    Thread.sleep(500);
                    //isInterruputed Thread interrupt ignored , Because it is not active at the time of interruption 
                    // The thread of will return false The method of ;
                   System.out.println(Thread.interrupted());
                   boolean b = Thread.currentThread().isInterrupted();
                   System.out.println(" The child thread is running ..."+b);
               }catch (Exception e){
    
                   System.out.println(" Thread the interrupt ");
                   return;
               }
           }
        });
        //2. Start thread 
        thread.start();
        // Sleep 3 second 
        thread.sleep(10000);
        // Execution thread interrupt 
        // In fact, it is in the form of throwing exceptions   Execution of control methods 
        // That is, by calling interrupt() Then an exception will be thrown , Is to stop the thread 
        thread.interrupt();
    }
}

[3] Brutal Use stop ：stop The method is out of date , But it can still stop ;