Scala Reactive Programming

Scala Future examples

We have discussed lots of theory so far. It's good to start developing some examples to understand the Scala Future API. Let's start now with the Scala Hello World Future App:

1. Create a Scala SBT project in your favorite IDE (mine is IntelliJ IDEA):

      Project Name: scala-future-app

build.sbt:

      name := "scala-future-app" 
      version := "1.0" 
      scalaVersion := "2.12.3" 

2. Create a Scala App:

      object ScalaFutureHelloWorldApp extends App{      }

3. Create a HelloWorld Future Object:

ScalaFutureHelloWorldApp.scala:

      import scala.concurrent.Future      object ScalaFutureHelloWorldApp extends App{        val helloWordlFuture = Future("Hello World")      }

4. When we run this program, we can observe the following error:

[error] .../scala-future- app/src/main/scala/com/packt/publishing/concurrent/future/ScalaFutureHelloWolrdApp.scala:8: ...