三个Java多线程循环顺序周期打印1-75个数

看到有这样一个关于并发的小题目，花了2分钟写一个demo

问题的描述

启动3个线程打印递增的数字, 线程1先打印1,2,3,4,5, 然后是线程2打印6,7,8,9,10, 然后是线程3打印11,12,13,14,15. 接着再由线程1打印16,17,18,19,20….以此类推, 直到打印到75. 程序的输出结果应该为

package com.tigerimport java.util.concurrent.atomic.AtomicIntegerimport akka.actor.{Actor, ActorLogging, ActorRef, ActorSystem, Props}object Print{  val count = new AtomicInteger(0)}class Print extends Actor with ActorLogging{  override def receive = {    case (v1:ActorRef,v2:ActorRef) =>      for(i <- 1 to 5){        log.debug("{}",Print.count.incrementAndGet()        //睡眠单纯为了适应线程调度        TimeUnit.MILLISECONDS.sleep(100)      }      if(Print.count.get()<75){        v1 ! (v2,self)      }  }}object T1 {  def main(args: Array[String]): Unit = {    val system = ActorSystem.create()    val v1 = system.actorOf(Props[Print].withDispatcher("print-dispatcher"))    val v2 = system.actorOf(Props[Print].withDispatcher("print-dispatcher"))    val v3 = system.actorOf(Props[Print].withDispatcher("print-dispatcher"))    v1 ! (v2,v3)  }}

application.conf

print-dispatcher {  type = Dispatcher  executor = "thread-pool-executor"  thread-pool-executor {    fixed-pool-size = 3  }  throughput = 100}

结果：

[DEBUG] [09/05/2017 23:36:06.916] [main] [EventStream] StandardOutLogger started[DEBUG] [09/05/2017 23:36:07.300] [main] [EventStream(akka://default)] logger log1-Logging$DefaultLogger started[DEBUG] [09/05/2017 23:36:07.300] [main] [EventStream(akka://default)] logger log1-Logging$DefaultLogger started[DEBUG] [09/05/2017 23:36:07.302] [main] [EventStream(akka://default)] Default Loggers started[DEBUG] [09/05/2017 23:36:07.302] [main] [EventStream(akka://default)] Default Loggers started[DEBUG] [09/05/2017 23:36:07.343] [default-print-dispatcher-9] [akka://default/user/$a] 1[DEBUG] [09/05/2017 23:36:07.444] [default-print-dispatcher-9] [akka://default/user/$a] 2[DEBUG] [09/05/2017 23:36:07.545] [default-print-dispatcher-9] [akka://default/user/$a] 3[DEBUG] [09/05/2017 23:36:07.645] [default-print-dispatcher-9] [akka://default/user/$a] 4[DEBUG] [09/05/2017 23:36:07.745] [default-print-dispatcher-9] [akka://default/user/$a] 5[DEBUG] [09/05/2017 23:36:07.846] [default-print-dispatcher-11] [akka://default/user/$b] 6[DEBUG] [09/05/2017 23:36:07.946] [default-print-dispatcher-11] [akka://default/user/$b] 7[DEBUG] [09/05/2017 23:36:08.046] [default-print-dispatcher-11] [akka://default/user/$b] 8[DEBUG] [09/05/2017 23:36:08.146] [default-print-dispatcher-11] [akka://default/user/$b] 9[DEBUG] [09/05/2017 23:36:08.247] [default-print-dispatcher-11] [akka://default/user/$b] 10[DEBUG] [09/05/2017 23:36:08.347] [default-print-dispatcher-10] [akka://default/user/$c] 11[DEBUG] [09/05/2017 23:36:08.447] [default-print-dispatcher-10] [akka://default/user/$c] 12[DEBUG] [09/05/2017 23:36:08.547] [default-print-dispatcher-10] [akka://default/user/$c] 13[DEBUG] [09/05/2017 23:36:08.648] [default-print-dispatcher-10] [akka://default/user/$c] 14[DEBUG] [09/05/2017 23:36:08.748] [default-print-dispatcher-10] [akka://default/user/$c] 15[DEBUG] [09/05/2017 23:36:08.848] [default-print-dispatcher-9] [akka://default/user/$a] 16[DEBUG] [09/05/2017 23:36:08.948] [default-print-dispatcher-9] [akka://default/user/$a] 17[DEBUG] [09/05/2017 23:36:09.049] [default-print-dispatcher-9] [akka://default/user/$a] 18[DEBUG] [09/05/2017 23:36:09.149] [default-print-dispatcher-9] [akka://default/user/$a] 19[DEBUG] [09/05/2017 23:36:09.249] [default-print-dispatcher-9] [akka://default/user/$a] 20[DEBUG] [09/05/2017 23:36:09.350] [default-print-dispatcher-11] [akka://default/user/$b] 21[DEBUG] [09/05/2017 23:36:09.450] [default-print-dispatcher-11] [akka://default/user/$b] 22[DEBUG] [09/05/2017 23:36:09.550] [default-print-dispatcher-11] [akka://default/user/$b] 23[DEBUG] [09/05/2017 23:36:09.650] [default-print-dispatcher-11] [akka://default/user/$b] 24[DEBUG] [09/05/2017 23:36:09.751] [default-print-dispatcher-11] [akka://default/user/$b] 25[DEBUG] [09/05/2017 23:36:09.851] [default-print-dispatcher-10] [akka://default/user/$c] 26[DEBUG] [09/05/2017 23:36:09.951] [default-print-dispatcher-10] [akka://default/user/$c] 27[DEBUG] [09/05/2017 23:36:10.051] [default-print-dispatcher-10] [akka://default/user/$c] 28[DEBUG] [09/05/2017 23:36:10.152] [default-print-dispatcher-10] [akka://default/user/$c] 29[DEBUG] [09/05/2017 23:36:10.252] [default-print-dispatcher-10] [akka://default/user/$c] 30[DEBUG] [09/05/2017 23:36:10.352] [default-print-dispatcher-9] [akka://default/user/$a] 31[DEBUG] [09/05/2017 23:36:10.452] [default-print-dispatcher-9] [akka://default/user/$a] 32[DEBUG] [09/05/2017 23:36:10.553] [default-print-dispatcher-9] [akka://default/user/$a] 33[DEBUG] [09/05/2017 23:36:10.653] [default-print-dispatcher-9] [akka://default/user/$a] 34[DEBUG] [09/05/2017 23:36:10.753] [default-print-dispatcher-9] [akka://default/user/$a] 35[DEBUG] [09/05/2017 23:36:10.854] [default-print-dispatcher-11] [akka://default/user/$b] 36[DEBUG] [09/05/2017 23:36:10.954] [default-print-dispatcher-11] [akka://default/user/$b] 37[DEBUG] [09/05/2017 23:36:11.054] [default-print-dispatcher-11] [akka://default/user/$b] 38[DEBUG] [09/05/2017 23:36:11.154] [default-print-dispatcher-11] [akka://default/user/$b] 39[DEBUG] [09/05/2017 23:36:11.255] [default-print-dispatcher-11] [akka://default/user/$b] 40[DEBUG] [09/05/2017 23:36:11.355] [default-print-dispatcher-10] [akka://default/user/$c] 41[DEBUG] [09/05/2017 23:36:11.455] [default-print-dispatcher-10] [akka://default/user/$c] 42[DEBUG] [09/05/2017 23:36:11.555] [default-print-dispatcher-10] [akka://default/user/$c] 43[DEBUG] [09/05/2017 23:36:11.656] [default-print-dispatcher-10] [akka://default/user/$c] 44[DEBUG] [09/05/2017 23:36:11.756] [default-print-dispatcher-10] [akka://default/user/$c] 45[DEBUG] [09/05/2017 23:36:11.856] [default-print-dispatcher-9] [akka://default/user/$a] 46[DEBUG] [09/05/2017 23:36:11.956] [default-print-dispatcher-9] [akka://default/user/$a] 47[DEBUG] [09/05/2017 23:36:12.057] [default-print-dispatcher-9] [akka://default/user/$a] 48[DEBUG] [09/05/2017 23:36:12.157] [default-print-dispatcher-9] [akka://default/user/$a] 49[DEBUG] [09/05/2017 23:36:12.257] [default-print-dispatcher-9] [akka://default/user/$a] 50[DEBUG] [09/05/2017 23:36:12.358] [default-print-dispatcher-11] [akka://default/user/$b] 51[DEBUG] [09/05/2017 23:36:12.458] [default-print-dispatcher-11] [akka://default/user/$b] 52[DEBUG] [09/05/2017 23:36:12.558] [default-print-dispatcher-11] [akka://default/user/$b] 53[DEBUG] [09/05/2017 23:36:12.658] [default-print-dispatcher-11] [akka://default/user/$b] 54[DEBUG] [09/05/2017 23:36:12.759] [default-print-dispatcher-11] [akka://default/user/$b] 55[DEBUG] [09/05/2017 23:36:12.859] [default-print-dispatcher-10] [akka://default/user/$c] 56[DEBUG] [09/05/2017 23:36:12.959] [default-print-dispatcher-10] [akka://default/user/$c] 57[DEBUG] [09/05/2017 23:36:13.059] [default-print-dispatcher-10] [akka://default/user/$c] 58[DEBUG] [09/05/2017 23:36:13.160] [default-print-dispatcher-10] [akka://default/user/$c] 59[DEBUG] [09/05/2017 23:36:13.260] [default-print-dispatcher-10] [akka://default/user/$c] 60[DEBUG] [09/05/2017 23:36:13.360] [default-print-dispatcher-9] [akka://default/user/$a] 61[DEBUG] [09/05/2017 23:36:13.460] [default-print-dispatcher-9] [akka://default/user/$a] 62[DEBUG] [09/05/2017 23:36:13.561] [default-print-dispatcher-9] [akka://default/user/$a] 63[DEBUG] [09/05/2017 23:36:13.661] [default-print-dispatcher-9] [akka://default/user/$a] 64[DEBUG] [09/05/2017 23:36:13.761] [default-print-dispatcher-9] [akka://default/user/$a] 65[DEBUG] [09/05/2017 23:36:13.862] [default-print-dispatcher-11] [akka://default/user/$b] 66[DEBUG] [09/05/2017 23:36:13.962] [default-print-dispatcher-11] [akka://default/user/$b] 67[DEBUG] [09/05/2017 23:36:14.062] [default-print-dispatcher-11] [akka://default/user/$b] 68[DEBUG] [09/05/2017 23:36:14.162] [default-print-dispatcher-11] [akka://default/user/$b] 69[DEBUG] [09/05/2017 23:36:14.263] [default-print-dispatcher-11] [akka://default/user/$b] 70[DEBUG] [09/05/2017 23:36:14.363] [default-print-dispatcher-10] [akka://default/user/$c] 71[DEBUG] [09/05/2017 23:36:14.463] [default-print-dispatcher-10] [akka://default/user/$c] 72[DEBUG] [09/05/2017 23:36:14.563] [default-print-dispatcher-10] [akka://default/user/$c] 73[DEBUG] [09/05/2017 23:36:14.664] [default-print-dispatcher-10] [akka://default/user/$c] 74[DEBUG] [09/05/2017 23:36:14.764] [default-print-dispatcher-10] [akka://default/user/$c] 75

从更高的角度看并发，将业务模型与底层系统分离，这或许是微服务的一个思路吧

附源码