Creating a jar file from a Scala file

Question

I\'m new to Scala and don\'t know Java. I want to create a jar file out of a simple Scala file. So I have my HelloWorld.scala, generate a HelloWorld.jar.

Manifest.m

Answer 1

I don't want to write why's and how's rather just show the solution which worked in my case (via Linux Ubuntu command line):

1)

mkdir scala-jar-example
cd scala-jar-example

2)

nano Hello.scala
object Hello extends App   {  println("Hello, world")   }

3)

nano build.sbt
import AssemblyKeys._

assemblySettings

name := "MyProject"

version := "1.0"

scalaVersion := "2.11.0"

3)

mkdir project
cd project 
nano plugins.sbt
addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.9.1")

4)

cd ../   
sbt assembly

5)

java -jar target/target/scala-2.11/MyProject-assembly-1.0.jar
>> Hello, world