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：