ReentrantLock：

1 /** 2  *    ReentrantLock测试逻辑类 3  */ 4 public class MyService { 5     private Lock lock = new ReentrantLock();//获取锁对象 6      7     public void testMethod() { 8         lock.lock(); 9         for (int i = 0; i < 5; i++) {10             System.out.println(Thread.currentThread().getName() + "----" + (i+1));11         }12         lock.unlock();13     }14 }

1 /** 2  *    ReentrantLock测试逻辑线程 3  */ 4 public class MyThread extends Thread{ 5      6     private MyService service; 7      8     public MyThread(MyService service) { 9         this.service = service;10         this.start();11     }12     13     @Override14     public void run() {15         service.testMethod();16     }17 }

1 /** 2  *    测试类 3  */ 4 public class Run { 5  6     public static void main(String[] args) { 7         MyService service = new MyService(); 8          9         //实例化 并且实例化的时候默认就调用start()方法启动10         MyThread thread1 = new MyThread(service);11         MyThread thread2 = new MyThread(service);12         MyThread thread3 = new MyThread(service);13         MyThread thread4 = new MyThread(service);14     }15 }

运行结果如下：