package JavaBasic;

import java.util.concurrent.locks.Lock;

import java.util.concurrent.locks.ReentrantLock;

/**

* @Classname SynLock

* @Description 使用Lock对象来实现同步机制

* @Date 19-5-25 下午4:04

* @Created by mao<tianmao818@qq.com>

*/

class Callme_1{

private Lock lock=new ReentrantLock();

void call(String msg){

lock.lock();

try{

System.out.print("lock: ["+msg);

try{

Thread.sleep(1000);

}catch (InterruptedException e){

System.out.println("Interrupted");

}

System.out.println("]");

}finally {

lock.unlock();

}

}

}

class Caller_1 implements Runnable{

String msg;

Callme_1 target;

Thread t;

public Caller_1(Callme_1 tar,String s){

target=tar;

msg=s;

t=new Thread(this);

t.start();

}

public void run(){

target.call(msg);

}

}

public class SynLock {

public static void main(String[] args){

Callme_1 target=new Callme_1();

//没有组织三个线程同时调用同一个对象的同一个方法,在call前面加上synchronized关键字

Caller_1 ob1=new Caller_1(target,"hello");

Caller_1 ob2=new Caller_1(target,"synchronized");

Caller_1 ob3=new Caller_1(target,"world");

try {

ob1.t.join();

ob2.t.join();

ob3.t.join();

}catch (InterruptedException e){

System.out.println("interrupted");

}

}

}