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CHAPTER
21
Scala Files I/O
Scala is open to make use of any Java objects and java.io.File is one of the objects which can be used in
Scala programming to read and write files. Following is an example of writing to a file:
import java.io._
object Test {
def main(args: Array[String]) {
val writer = new PrintWriter(new File("test.txt" ))
}
}
writer.write("Hello Scala")
writer.close()
When the above code is compiled and executed, it creates a file with "Hello Scala" content which you can check
yourself.
C:/>scalac Test.scala
C:/>scala Test
C:/>
Reading line from Screen:
Sometime you need to read user input from the screen and then proceed for some further processing. Following
example shows you how to read input from the screen:
object Test {
def main(args: Array[String]) {
print("Please enter your input : " )
val line = Console.readLine
}
}
println("Thanks, you just typed: " + line)
When the above code is compiled and executed, it prompts you to enter your input and it continues until you press
ENTER key.
C:/>scalac Test.scala
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