• Articles
  • Tutorials
  • Interview Questions

Scala Hello World in 5 Minutes - A Quick and Easy Guide

First Program in Scala

It includes both an interpreter and compiler. The compiler generates a .class file that is binary files that can be executed by the JVM whereas the interpreter executes source code contained in a text file or it can be used to work interactively with Scala. A simple program in scala is shown as follows:-

object HelloIntellipaat {
def main(args: Array[String]) {
println("Hello Intellipaat")

Check out the Scala certification blog!

The identifier args refers to the command line arguments, main is predefined. Suppose this code is stored in HelloIntellipaat.scala. The command which is used to compile and execute the .class file is as follows:

$ scalac HelloIntellipaat.scala
$ scala HelloIntellipaat
Hello Intellipaat

Certification in Bigdata Analytics

($) The dollar sign represents the command line prompt and -classpath specifies the location of one or more .class files. If the user wants to use the interpreter and is working on a UNIX system or a Unix-like system such as OpenSolaris or Linux respectively use the following code:

exec scala "$0" "$@"
println("Hello Intellipaat")

Prepare yourself for the industry by going through this Top Spark Interview Questions!

or the following code:

exec scala "$0" "$@"
object HelloIntellipaat {
def main(args: Array[String]) {
println("Hello Intellipaat " + args.toList)

Have a look at our blog about Strings in R.

in a text file, say HelloIntellipaat. The program can be executed by entering the following command:

$ hello

Interested in learning Scala? Click here to learn more about this Scala Course!

The two versions presented do not produce exactly the same output. For example, the second version will print the following output
Hello Intellipaat List()
On Windows systems users can get the same results by creating a text file say hello.bat which  contains the following code:

@echo off
call scala %0 %*
goto :eof
rem *
rem Scala code follows
rem *
println("Hello Intellipaat")

Refer to our blog for detailed information about Scala Collection.

Become a Big Data Architect

This program can be executed from a CMD shell by entering a command like the following one:
C:\My Programs>HelloIntellipaat.bat

Still, have queries? Come to Intellipaat’s Big Data Community, clarify all your doubts, and excel in your career!

Type scala in the command prompt to start the scala interpreter –

$ scala
Welcome to Scala version 2.11.7.final (Java HotSpot(TM) Server 64-Bit VM, Java 1.6.0_18).
Type in expressions to have them evaluated
Type: help for more information.
scala> var x=20
x: Int = 20
scala> ("intellipaat").length
res1: Int = 11

This blog will help you get a better understanding of the Significance Of Scala!

Course Schedule

Name Date Details
Big Data Course 22 Jun 2024(Sat-Sun) Weekend Batch
View Details
Big Data Course 29 Jun 2024(Sat-Sun) Weekend Batch
View Details
Big Data Course 06 Jul 2024(Sat-Sun) Weekend Batch
View Details

About the Author

Technical Reseach Analyst - Data Engineering

Abhijit is a Technical Research Analyst specializing in Deep Learning. He holds a degree in Computer Science with a focus on Data Science. Being proficient in Python, Scala, C++, Dart, and R, he is passionate about new-age technologies. Abhijit crafts insightful analyses and impactful content, bridging the gap between cutting-edge research and practical applications.