How to copy a directory and its contents in Kotlin

How to copy a directory and its contents in Kotlin.

Here's a step-by-step tutorial on how to copy a directory and its contents in Kotlin:

1. Import the necessary libraries:

import java.io.File
import java.nio.file.Files
import java.nio.file.StandardCopyOption

2. Define a function to copy the directory and its contents:

fun copyDirectory(sourceDir: File, destinationDir: File) {
    // Create the destination directory if it doesn't exist
    if (!destinationDir.exists()) {
        destinationDir.mkdir()
    }

    // Get a list of all files and directories in the source directory
    val files = sourceDir.listFiles()

    // Iterate through the files and directories
    for (file in files) {
        val newFile = File(destinationDir, file.name)

        // If the current item is a directory, recursively call the function
        if (file.isDirectory) {
            copyDirectory(file, newFile)
        } else {
            // If the current item is a file, copy it to the destination directory
            Files.copy(file.toPath(), newFile.toPath(), StandardCopyOption.REPLACE_EXISTING)
        }
    }
}

3. Call the copyDirectory function with the source and destination directories:

val sourceDir = File("path/to/source/directory")
val destinationDir = File("path/to/destination/directory")

copyDirectory(sourceDir, destinationDir)

In the above example, make sure to replace "path/to/source/directory" and "path/to/destination/directory" with the actual paths of the source and destination directories.

The copyDirectory function first checks if the destination directory exists. If not, it creates it. It then gets a list of all files and directories in the source directory. For each item, it checks if it's a directory. If it is, it recursively calls the copyDirectory function with the subdirectory and a new destination directory. If it's a file, it copies it to the destination directory using the Files.copy method.

By following these steps, you can easily copy a directory and its contents in Kotlin.