Scala program to print hello world

1. Introduction

Printing "Hello, World!" is a classic first step in learning any new programming language. It's a simple task but essential for verifying that your development environment is set up correctly. In this blog post, we'll explore how to print "Hello, World!" in Scala.

2. Program Steps

1. Set up the Scala environment.

2. Create an object to house the main function.

3. Within the main function, use the println method to print "Hello, World!" to the console.

4. Run the program.

3. Code Program

object HelloWorldApp {
  def main(args: Array[String]): Unit = {
    // Print Hello, World! to the console
    println("Hello, World!")
  }
}

Output:

Hello, World!

Explanation:

1. We start by defining an object named HelloWorldApp. In Scala, the main method, which is the entry point of the program, resides in an object (not a class).

2. The main function accepts an array of strings (args) but doesn't use them in this simple example.

3. Inside the main function, we use Scala's built-in println method to print "Hello, World!" to the console.

4. When the program is executed, it prints the greeting, indicating that it's running correctly.


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