JAVA ReentrantLock的使用

源码如下

对比synchronized，synchronized使用时会显示的指定一个对象(方法为调用对象，代码块会需要对象作为参数)，来获取一个对象的独占锁

而ReentrantLock可能就是使用的ReentrantLock对象的独占锁来实现锁的功能，所以不同线程要用同一个ReentrantLock对象来互斥

        public static void  main(String[] args){
            doSync();
        }
 
    private static void doSync() {
 
        MyThread myThread = new MyThread();
 
        new Thread(myThread).start();
 
        Thread tt = new Thread(myThread);
        tt.start();
        try {
            Thread.sleep(1000, 0);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("try interuppt ");
 
        tt.interrupt()；
 
    }
class MyThread implements Runnable{
    private         ReentrantLock lock = new ReentrantLock(); //用同一个lock对象来获取锁，实现互斥，申请的就是lock的锁
    @Override
    public void run() {
 
        try {
            System.out.println("try to wait");
            lock.lockInterruptibly();
            Thread.sleep(5000);
            //       this.wait();
            System.out.println("after wait");
            lock.unlock();
 
        } catch (InterruptedException e) {
            System.out.println("recv interrupt");
        }
 
    }
}

输出：

try to wait
try to wait
try interuppt
recv interrupt
after wait