package concurrent.sync;

/**

* Created by Edwin Xu on 6/27/2020 1:42 PM

*

* 悲观锁Synchronized 怎么使用

*

*/

public class Synchronized {

private static int count =0;

public static synchronized void test(){

count++;

System.out.println(count);

}

public static void main(String[] args) {

for (int i = 0; i < 100; i++) {

new Thread(()->{test();},"线程"+i).start();

}

System.out.println("--------------------------------------");

for (int i = 0; i < 100; i++) {

new SynchronizeTest().run();

}

Integer a = 0;

synchronized(a) {

}

}

}

class SynchronizeTest implements Runnable{

private static int cnt=0;

@Override

public void run(){

synchronized (this){

cnt++;

System.out.println(cnt);

}

}

}