【Java】线程通信-双线程循环打印1~100

public class Test {
    public static void main(String[] args) {
        A a = new A();
        new Thread(a,"A").start();
        new Thread(a,"B").start();
    }
}

class A implements Runnable {
    int i = 1;
    @Override
    public void run() {
        while (true) {
            synchronized (this) {
                notify();
                if (i<=100) {
                    try {
                        Thread.sleep(500);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    System.out.println(Thread.currentThread().getName()+"  "+i);
                    i++;
                } else {
                    break;
                }
                try {
                    wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}