How to take Input from a User in Scala?

How to take Input from a User in Scala?

Last Updated : 08 May, 2024

This article focuses on discussing various approaches to taking input from a user in Scala.

Table of Content

Using scala.io.StdIn.readLine() Method
Using java.util.Scanner
Using Command-line Argument

Using scala.io.StdIn.readLine() Method

Below is the Scala program to take input from the user:

Scala

object UserInputExample {
  def main(args: Array[String]): Unit = {
    println("Enter your name:")
    val name = scala.io.StdIn.readLine()    
    println("Hello, " + name + " Welcome!")
  }
}

Output:

scala.io.StdIn.readLine() Output

Using java.util.Scanner

Below is the Scala program to take an input from user:

Scala

import java.util.Scanner

object UserInputExample {
  def main(args: Array[String]): Unit = {
    val scanner = new Scanner(System.in)
    println("Enter your name:")
    val name = scanner.nextLine()
    println("Hello, " + name + " Welcome!")
  }
}

Output:

java.util.Scanner Output

Explanation:

In this example, we import java.util.Scanner and use it to read input from the standard input stream using nextLine() method.

Using Command-line Argument

Below is the Scala program to take an input from user:

Scala

object UserInputExample {
  def main(args: Array[String]): Unit = {
    if (args.length > 0) {
      val name = args(0)
      println("Hello, " + name + " Welcome!")
    } else {
      println("Please provide your name as a command-line argument.")
    }
  }
}

Output:

Command-line Argument — Command-line Argument Output

How to take Input from a User in Scala?

abulhax

Improve

Article Tags :

Scala

Similar Reads

Taking Input from Users in Julia

Reading user input is a way of interaction between the program and the user. User inputs are necessary in case of testing a piece of code with varying and legitimate inputs. Reading user inputs from console in Julia can be done through inbuilt I/O methods like : readline() readlines() Using readline

How to print dataframe in Scala?

Scala stands for scalable language. It was developed in 2003 by Martin Odersky. It is an object-oriented language that provides support for functional programming approach as well. Everything in scala is an object e.g. - values like 1,2 can invoke functions like toString(). Scala is a statically typ

How to Get User Input in Ruby?

The input of users is a very vital part of many programs which allows customization and interaction. In Ruby, there are various methods to get input from the user, each having its own benefits and use cases. This article will discuss two different ways to obtain user input in Ruby. Table of Content

How to Check for Null in a Single Statement in Scala?

In Scala, null is a Special type value that represents the absence of a value or a reference or the unavailability of a value for a variable. It is important to handle null values in programming otherwise it can lead to NullPointerException. In this article, we are going to see different examples th

Taking Input from User in R Programming

Developers often have a need to interact with users, either to get data or to provide some sort of result. Most programs today use a dialog box as a way of asking the user to provide some type of input. Like other programming languages in R it's also possible to take input from the user. For doing s