How to move file/files from one folder to another in Scala

Question

I am new to Scala.

I\'ve Googled a lot on how to move files in Scala, but have only found how to move files in Java. I tried to move files using Java import Java.io

Answer 1

From my understanding of your question,
you are trying to pass String variables instead of java.nio.Path variables to the Files.move().

The below way works:

import java.io.File
import java.nio.file.{Files, Path, StandardCopyOption}

val d1 = new File("/abcd").toPath
val d2 = new File("/efgh").toPath

Files.move(d1, d2, StandardCopyOption.ATOMIC_MOVE)

However I see one more issue in your code. Both StandardCopyOption.REPLACE_EXISTING and StandardCopyOption.ATOMIC_MOVE should work but, you can't move a parent directory directly into it's child directory.

$ mv public/ public/images
mv: cannot move ‘public/’ to a subdirectory of itself, ‘public/images’

Instead you might want to move public -> tmp -> public/images

Answer 2

os-lib makes it easy to copy files from one directory to another:

os.list(os.pwd/"public").map(os.move.into(_, os.pwd/"pub2"))

The java.io and java.nio libraries are generally difficult to work with (although not that ugly for this particular operation). It's best to rely on os-lib for filesystem operations.

os.move.into takes two arguments: the file that's being moved and the destination directory.

This code is flexible and easily modifiable. You could easily update it to only move files with a certain file extension.

See here for more info on how to use os-lib.

Answer 3

Refer the below Scala code from my Github : https://github.com/saghircse/SelfStudyNote/blob/master/Scala/MoveRenameFiles.scala

You need to specify your source and target folder in main function:

    val src_path = "<SOURCE FOLDER>" // Give your source directory
    val tgt_path = "<TARGET FOLDER>" // Give your target directory

It also rename files. If you do not want to rename files, then update as below:

val FileList=getListOfFiles(src_path)
FileList.foreach{f => 
  val src_file = f.toString()

  //val tgt_file = tgt_path + "/" + getFileNameWithTS(f.getName) // If you want to rename files in target
  val tgt_file = tgt_path + "/" + f.getName // If you do not want to rename files in target

  copyRenameFile(src_file,tgt_file)
  //moveRenameFile(src_file,tgt_file) - Try this if you want to delete source file
  println("File Copied : " + tgt_file)
}