Scala File Input and Output

Overview of reading and writing file operations

File operations mostly include reading data from the file or writing data into files.

Writing Data from File
e.g.

import java.io._
object Intellipaat {
def main(args: Array[String]) {
val writer = new PrintWriter(new File("intellipaat.txt" ))
writer.write("Hello Intellipaat")
writer.close()
}
}

When we compile and execute this program then it writes Hello Intellipaat in intellipaat.txt file.

Reading Data from File
e.g.

import scala.io.Source
object Intellipaat {
def main(args: Array[String]) {
println("Data in File is:" )
Source.fromFile("intellipaat.txt" ).foreach{
print
}
}
}

Compile and execute the above program:
scalac Intellipaat.scala
scala Intellipaat
Output
Data in file is: Hello Intellipaat