/**
 * @author: ChenforCode
 * @date: 2019年4月9日 21:47
 * @description: 类锁的第二种形式 .class
 */
public class SynchronizedClassClass5 implements Runnable{

 private static SynchronizedClassClass5 instance1 = new SynchronizedClassClass5();
 private static SynchronizedClassClass5 instance2 = new SynchronizedClassClass5();

 @Override
 public void run() {
 method();
 }

 public static void main(String[] args){
 Thread t1 = new Thread(instance1);
 Thread t2 = new Thread(instance2);
 t1.start();
 t2.start();

 while (t1.isAlive() || t2.isAlive()){

 }
 System.out.println("finish");
 }

 public void method(){
 //代表着一部分代码块加上了类锁
 synchronized (SynchronizedClassClass5.class){
 System.out.println("我是类锁的第二种方式,名字是:" + Thread.currentThread().getName());
 try {
 Thread.sleep(3000);
 } catch (InterruptedException e) {
 e.printStackTrace();
 }
 System.out.println(Thread.currentThread().getName() + "运行结束");
 }
 }
}