How to build jar file and run the jar using SBT?

// Sample program

package my1st

object my1st {

  def main(args:Array[String]) : Unit = {

    println("Hello World")

  }

}

SBT - Scala Build Tool (Simple Build Tool) / Simple Build Tool

Download and install sbt from here : https://www.scala-sbt.org/download.html

https://piccolo.link/sbt-0.13.17.msi (direct link)

Open the project in IntelliJ Idea

Right click the project name - Copy - Copy Path

Select : Absolute Path : C:\Users\sankara\IdeaProjects\my1st

Open Windows Explorer

Do paste in address bar

Shift + Right click on the free space 

Open command prompt here

C:\Users\sankara\IdeaProjects\my1st>dir

 Volume in drive C has no label.

 Volume Serial Number is 363F-334D

 Directory of C:\Users\sankara\IdeaProjects\my1st

26-08-2020  12:44    <DIR>          .

26-08-2020  12:44    <DIR>          ..

26-08-2020  13:21    <DIR>          .idea

26-08-2020  12:42               328 build.sbt

26-08-2020  12:43    <DIR>          project

26-08-2020  12:40    <DIR>          src

26-08-2020  12:44    <DIR>          target

               1 File(s)            328 bytes

               6 Dir(s)  334,877,937,664 bytes free

sbt package --> to build jar file

C:\Users\sankara\IdeaProjects\my1st>sbt package

Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m; sup

port was removed in 8.0

[info] welcome to sbt 1.3.13 (Oracle Corporation Java 1.8.0_202)

[info] loading project definition from C:\Users\sankara\IdeaProjects\my1st\project

[info] loading settings for project my1st from build.sbt ...

[info] set current project to my1st (in build file:/C:/Users/sankara/IdeaProjects/my1st/)

[success] Total time: 2 s, completed 26 Aug, 2020 1:31:33 PM

sbt run --> to run the jar 

C:\Users\sankara\IdeaProjects\my1st>sbt run

Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0

[info] welcome to sbt 1.3.13 (Oracle Corporation Java 1.8.0_202)

[info] loading project definition from C:\Users\sankara\IdeaProjects\my1st\project

[info] loading settings for project my1st from build.sbt ...

[info] set current project to my1st (in build file:/C:/Users/sankara/IdeaProjects/my1st/)

[info] running my1st.my1st

Hello World

[success] Total time: 3 s, completed 26 Aug, 2020 1:32:34 PM