Scala Basics-multithreaded Example

Original: https://my.oschina.net/u/877759/blog/501733

Write a scala multi-threaded demo to prepare for later use

Runnable/callable

Difference: runnable No return value, callable thread executes with return value

runnable Example

Import java.util.concurrent. {Executors, executorservice} object test {  def main (args: Array[String])  {    //Creating a thread pool     val threadpool:executorservice=
Executors.newfixedthreadpool (5)     try {      //commit 5 threads       for (i <- 1 to 5) {         //threadpool.submit (New threaddemo ("thread" +i)          threadpool.execute (New threaddemo ("thread" +i)       }      }finally {      threadpool.shutdown ()      }      //define thread class, sleep 100 milliseconds per print   class threaddemo (threadname:string)   extends runnable{    override def run () {   &nbsP;  for (i <- 1 to 10) {        println (threadname+ "|"
+i)         thread.sleep (+)       }     }   }}

Callable Example

Import java.util.concurrent. {Callable, futuretask, executors, executorservice} object test {  def  Main (args: array[string])  {    val threadpool:executorservice= Executors.newfixedthreadpool (3)     try {      val  Future=new futuretask[string] (new callable[string] {         override def call ():  string = {           thread.sleep (+)           return  "im  Result "        }       })   
    threadpool.execute (future)       println (Future.get ())     }finally {      threadpool.shutdown()     }   }}