java 一个线程执行减，一个线程执行加

class MyThreadA implements Runnable{
    private boolean flag=true;
    public void run(){
        int i=0;
        while(this.flag){
            while(true){
                System.out.println(Thread.currentThread().getName()+"运行，i="+(i++));
            }
        }
    }
}
    class MyThreadB implements Runnable{
        private boolean flag=true;
        public void run(){
            int i=0;
            while(this.flag){
                while(true){
                    System.out.println(Thread.currentThread().getName()+"运行，i="+(i--));
                }
            }
        }
    }
        
public class StopDemo {
    public static void main(String[] args) {
        MyThreadA A=new MyThreadA();
        MyThreadB B=new MyThreadB();
        Thread A1=new Thread(A,"线程");
        Thread B1=new Thread(B,"xc");
        A1.start();
        B1.start();

    }

}