How to setup Run-Time Environment for Scala?

How to run a program in Scala? The environment details and set up to compile and run Scala programs both online and offline. In this tutorial, on RunTime Environment in Scala, you will learn what are Scala IDE and how can you run them? By Shivang Yadav Last updated : April 01, 2023

Scala Programming language is very versatile and it can be installed on any type of Operating System may it be Windows or Unix based in a few easy steps. In this Scala tutorial, on runtime environment, you will learn some easy steps to set up your own Scala environment on your system. Also, I will provide some online compiler that can be helpful in learning.

Run Scala on your system

Scala runs its code on Java, i.e. it requires java 1.8 or greater version installed on your system to run its code. To install and run a Scala program on your system you need to follow these steps,

1) Check Java Installation

To run a Scala program on your system, the first step is to install Java. For this, you need to install SDK ( Software Development Kit ) on your system. Check which version of Java is Installed on Your System,

Run the command, java -version on your system. This will output, the java version.

For Unix based operating system, this command will be
SHIVANGs-MacBook-Pro:~ shivang$ java -version
And will give the output,

java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)

For Windows operating system, this command will be
\>java -version
And will have the same output as Mac Os.

2) Install Scala On Your System

Once you have installed Java on your system, you have to download Scala from its official website, https://www.scala-lang.org/download/. Then run the following command on your system. There you will have two options to install scala using IDE or SBT.

Install Scala with INTELLIJ IDE: This version is for those who want to develop scalable project or are beginners.

Install Scala with SBT: This installation is for those who know command line and do not want to use IDE.

3) Testing and Running your Scala program

On your command line, type Scala this will start you code debugger in Scala. In this debugger, you can either type-in your code or you can run your program file.

Running a code file in cmd
In this, you have to make a Scala program and store the file with extension .scala and run this file on your command prompt with command
scala file_name.scala
This will run your program and give adequate output based on your code.
Running a direct Scala code
Direct Scala code on command prompt can be written after running the Scala command. On hitting enter, the code will run and output will be shown in the next line.

Run Scala on an online compiler

There are many Scala online compilers available and you can run your code. If you don't need to install a Scala code on your system or need to test some component while working or learning the online compilers are a really good option to choose.

Here is a list of some compilers that can be used for working on Scala programs.

Overview of Scala

Scala vs Java | What are the Major Changes?