ReentrantLock的简单使用

ReentrantLock：

/**
 *    ReentrantLock测试逻辑类
 */
public class MyService {
    private Lock lock = new ReentrantLock();//获取锁对象
    
    public void testMethod() {
        lock.lock();
        for (int i = 0; i < 5; i++) {
            System.out.println(Thread.currentThread().getName() + "----" + (i+1));
        }
        lock.unlock();
    }
}

/**
 *    ReentrantLock测试逻辑线程
 */
public class MyThread extends Thread{
    
    private MyService service;
    
    public MyThread(MyService service) {
        this.service = service;
        this.start();
    }
    
    @Override
    public void run() {
        service.testMethod();
    }
}

/**
 *    测试类
 */
public class Run {

    public static void main(String[] args) {
        MyService service = new MyService();
        
        //实例化 并且实例化的时候默认就调用start()方法启动
        MyThread thread1 = new MyThread(service);
        MyThread thread2 = new MyThread(service);
        MyThread thread3 = new MyThread(service);
        MyThread thread4 = new MyThread(service);
    }
}

运行结果如下：