/**
     * 子线程循环10次，接着主线程循环100次，接着又回到子线程循环10次，接着回到主线程循环100次
     * ，如此循环50次
     */
public class ThreadCommunication {

    public static void main(String[] args) {
        new ThreadCommunication().test();
    }

    public void test() {
        final Bussiness bi = new Bussiness();
        //sub thead
        new Thread(new Runnable() {
            @Override
            public void run() {
                for (int j = 1; j <= 50; j++) {
                    bi.sub(j);
                }

            }
        }).start();
        //main thread
        for (int j = 1; j <= 50; j++) {
            bi.main(j);
        }
    }

    class Bussiness {
        private boolean checkStat = true;

        public synchronized void sub(int j) {
            while (!checkStat) {    //if/while都行
                try {
                    this.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
                }
            }
            for (int i = 1; i <= 10; i++) {
                System.out.println(“sub ” + i + ” thread start…” + “loop” + j);
            }
            checkStat = false;
            this.notify();
        }

        public synchronized void main(int j) {
            while (checkStat) {
                try {
                    this.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
                }
            }
            for (int i = 1; i <= 100; i++) {
                System.out.println(“main ” + i + “thread start…” + “loop” + j);
            }
            this.checkStat = true;
            this.notify();

        }

    }
}