walkTopDown
Gets a sequence for visiting this directory and all its content in top-down order. Depth-first search is used and directories are visited before all their files.
fun File.walkTopDown(): FileTreeWalk(source)
import java.io.File
fun main() {
val root = File("src") // Replace with the directory you want to walk
// Walk the directory tree in top‑down order
root.walkTopDown()
.forEach { file ->
// Print each directory before its files
if (file.isDirectory) {
println("📁 ${file.relativeTo(root)}")
} else {
println(" 📄 ${file.relativeTo(root)}")
}
}
}