停止一个java的线程执行

public class stopThread extends Thread {
    private volatile boolean stop = false;
    
    @Override 
    public void run(){
        System.out.println("t1 is start...");
        while(!stop){
            System.out.println("t1 is running....");
        }
        System.out.println("t1 stopped");
    }
    
    public void terminate(){
        stop = true;
    }
    
    public static void main(String[] args){
        stopThread t1 = new stopThread();
        t1.start();
        for(int i = 0; i < 500000;i++ ){
            System.out.println("main is running....");
        }
        t1.terminate();
    }

}