How to get file name in Kotlin?

In this tutorial, you shall learn how to get the name of a file identified by a given path in Kotlin using File.name property, with example programs.

Kotlin – Get file name

To get the name of a file in Kotlin, you can use the name property of java.io.File class.

Step to get file name

1. Consider that we have a file identified by a given path.
2. Create a file object with the given path using java.io.File class, and read the name of the file object using File.name property.

val aFile = File("path/to/file")
aFile.name

The property returns a string value representing the name of the file.

Example

For this example, we will consider a file named info.txt at the path mydata/set1/info.txt.

In the following program, we programmatically get the file name using File.name property.

Main.kt

import java.io.File

fun main() {
    val filePath = "mydata/set1/info.txt"
    val file = File(filePath)
    val fileName = file.name
    println("File name : $fileName")
}

Output

File name : info.txt

Conclusion

In this Kotlin Tutorial, we learned how to get the name of a file from a file object using File.name property.