package com.basic;

import java.util.ArrayList;

import java.util.List;

import java.util.concurrent.atomic.AtomicInteger;

/**

* @program JavaBooks

* @description: volatile并不能保证的多线程的一致性

* @author: mf

* @create: 2019/12/28 23:46

*/

public class T7 {

AtomicInteger count = new AtomicInteger(0);

// /*volatile*/ int count = 0;

/*synchronized*/ void m() {

for (int i = 0; i < 1000; i++) {

// count++;

count.incrementAndGet();

}

}

public static void main(String[] args) {

T7 t7 = new T7();

List<Thread> threads = new ArrayList<>();

for (int i = 0; i < 10; i++) {

threads.add(new Thread(t7::m, "thread-" + i));

}

threads.forEach((o) -> o.start());

threads.forEach((o) -> {

try {

o.join();

} catch (InterruptedException e) {

e.printStackTrace();

}

});

System.out.println(t7.count);

}

}