使用Lock类
package com.miller.datastructure.thread;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
/**
* @program: data-structure
* @description: 使用Lock对象
* @author: Miller.FAN
* @create: 2019-10-20 17:52
**/
public class UseLockimplements Runnable{
private Locklock =new ReentrantLock();// 使用显示的Lock对象解决共享资源竞争
Doublea =2.12345;
Doubleb =3.12345;
@Override
public void run() {
lock.lock();
try {
Double c =a+b;
System.out.println(Thread.currentThread() +"双精度浮点值：c = " + c);
}catch (Exception e) {
e.printStackTrace();
}finally {
lock.unlock();
}
}
public static void main(String[] args) {
Thread miller_thread =new Thread(new UseLock(),"miller_thread");
Thread bill_thread =new Thread(new UseLock(),"bill_thread");
miller_thread.start();
bill_thread.start();
}
}
显式的Lock对象在加锁和释放锁方面，相对于内建的synchronized锁来说，还赋予了你更细粒度的控制力。
