Java await/signal基础应用

package com.zhiwei.thread;

import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

public class TheadAwait {

public boolean flag = true;
Lock lock = new ReentrantLock();
Condition condition = lock.newCondition();

public void get() {
try {
Thread.sleep(5000);
lock.lock();
while (!flag) {
condition.await();
}
System.out.println(Thread.currentThread().getName()+":-----------------");
flag = !flag;
condition.signal();
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
lock.unlock();
}
}

public void put() {
try {
Thread.sleep(5000);
lock.lock();
while (flag) {
condition.await();
}
System.out.println(Thread.currentThread().getName()+":*****************");
flag = !flag;
condition.signal();
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
lock.unlock();
}
}

public static void main(String[] args) {

TheadAwait alternatelyPrint = new TheadAwait();

while (true) {
new Thread(new Runnable() {

@Override
public void run() {
alternatelyPrint.get();
}
}).start();

new Thread(new Runnable() {

@Override
public void run() {
alternatelyPrint.put();
}
}).start();
}
}
}