package com.study; public class Demo001 { public static void main(String[] args) { Demo001 demo = new Demo001(); final OutPutClass putPutClass = demo.new OutPutClass(); Thread thread = new Thread(new Runnable() { @Override public void run() { for (int index = 1; index <= 50; index++) { putPutClass.sub(index); } } }); thread.start(); //因为main方法下面也是一个线程,而且是主线程 for (int index = 1; index <= 50; index++) { putPutClass.main(index); } } class OutPutClass { private boolean isSync = true; public synchronized void sub(int j) { while(!isSync){ try { this.wait(); } catch (InterruptedException e) { e.printStackTrace(); } } for(int index = 1;index <= 10;index ++){ System.out.println("当前线程【" + Thread.currentThread().getName() + "】正在执行sub,执行次数为:" + index + ",循环次数为:" + j); } isSync = false; this.notify(); } public synchronized void main(int j) { while(isSync){ try { this.wait(); } catch (InterruptedException e) { e.printStackTrace(); } } for(int index = 1;index <= 100;index ++){ System.out.println("当前线程【" + Thread.currentThread().getName() + "】正在执行main,执行次数为:" + index + ",循环次数为:" + j); } isSync = true; this.notify(); } } }