两个线程交替打印

Posted 2021-11-24 lisin-lee-cooper

使用同一个Runnable对象加锁打印

public class PringThread implements Runnable {
    int i = 1;

    @Override
    public void run() {
        while (true) {
            synchronized (this) {
                notify();
                if (i <= 100) {
                    System.out.println(Thread.currentThread().getName() + ":" + i);
                    i++;
                    try {
                        wait();
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }
    }

    public static void main(String[] args) {

        PringThread t = new PringThread();
        new Thread(t, "线程A").start();
        new Thread(t, "线程B").start();

    }

}