java多线程学习（二）---线程通信

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子线程循环5次，接着主线程循环10次，接着又回到子线程循环5次，接着再回到主线程又循环10次，如此循环50次，请写出代码

public class TraditionalThreadCommunication {    public static void main(String[] args) {        Business business = new Business();        new Thread(new Runnable() {            @Override            public void run() {                for (int i = 1; i <=50 ; i++) {                    business.sub(i);                }            }        }).start();        for (int i = 1; i <=50 ; i++) {            business.main(i);        }    }    static class Business {        private boolean flag = true;        public synchronized void main(int i) {            while (!flag) {                try {                    this.wait();                } catch (InterruptedException e) {                    e.printStackTrace();                }            }            for (int j = 1; j <= 10; j++) {                System.out.println("main thread sequece of " + j + "  loop " + i);            }            flag = false;            this.notify();        }        public synchronized void sub(int i) {            while (flag) {                try {                    this.wait();                } catch (InterruptedException e) {                    e.printStackTrace();                }            }            for (int j = 1; j <= 5; j++) {                System.out.println("sub thread  sequece of " + j + "  loop " + i);            }            flag = true;            this.notify();        }    }}

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