1. Import the File.separator constant and assign an alias to it:

import java.io.File.separator as SEPARATOR

2. Declare a String storing a path to the file we are going to read:

val filePahtName = "src${SEPARATOR}main${SEPARATOR}resources${SEPARATOR}file1.txt"

3. Instantiate a File using the specified path:

val filePahtName = "src${SEPARATOR}main${SEPARATOR}resources${SEPARATOR}file1.txt"
val file = File(filePahtName)

4. Read the text from the file and print it to the console:

val filePahtName = "src${SEPARATOR}main${SEPARATOR}resources${SEPARATOR}file1.txt"
val file = File(filePahtName)
val fileText: String = file.readText()
println(fileText)