public class ThreadWaitNotifyTest{
    private boolean flag = true;
    private void test(){
        Object lock = new Object();
        Thread t = new Thread(new Runnable() {
            @Override
public void run() {
                synchronized (lock) {
                    for(;flag;){
                        log("threadid = " 
 
+ Thread.currentThread().getId());
                        try {
                            lock.wait();
                            log("threadid wait end");
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                    }
                    log("threadid end thread"
 
);
                }
            }
        });
        t.start();

        for(int i=0; i < 3; i++) {
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            log("threadid notify " + i);
            synchronized 
 
(lock) {
                lock.notify();
            }
        }
        synchronized (lock) {
            flag = false;
            lock.notify();
        }
    }
}