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Scala program to read data from a file line by line

Here, we are going to learn how to read data from a file line by line in Scala programming language?
Submitted by Nidhi, on July 16, 2021 [Last updated : March 11, 2023]

Scala - Reading a File Line-by-Line

In this program, we will read data from a file line by line using the getLines() method and print data on the console screen.

Scala code to read data from a file line by line

The source code to read data from a file line by line is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Scala program to read data from a file 
// line by line

import scala.io.Source;

object Sample {
  // Main method
  def main(args: Array[String]) {

    val file = Source.fromFile("Sample.txt")

    println("Data of file:");

    //Read data from file line by line.
    for (line <- file.getLines) {
      println(line)
    }

    file.close();
  }
}

Output

Data of file:
Text Line1
Text Line2
Text Line3
Text Line4

Explanation

In the above program, we used an object-oriented approach to create the program. We imported the Source class using the below statement.

import scala.io.Source;

And, we created a singleton object Sample and defined the main() function. The main() function is the entry point for the program.

In the main() function, we used the fromFile() method of the Source class to create an object. Then read data from a file line by line using the getLines() method and printed the data on the console screen.

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