Scala uses multithreaded examples

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 () {       for (i&NBSP;&LT;-&NBSP;1&NBSP;TO&NBSP;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 ()     }  }} 

Scala uses multithreaded examples