Kotlin Programming Cookbook

How to do it…

Let's follow these steps to understand how to read a file using the InputReader class:

1. There are two ways to read a file, one of which is to attach an input stream to the file. Let's see how we can do that and use InputReader to read its contents:

import java.io.Fileimport java.io.InputStreamfun main(args: Array<String>) {    val inputStream: InputStream = File("example2.txt").inputStream()    val inputString = inputStream.reader().use { it.readText() }    println(inputString)}

2. The other way is without getting a stream and directly reading the contents of the file, such as in the following example:

import java.io.Filefun main(args: Array<String>) {    val inputString = File("example2.txt").reader().use { it.readText() } println(inputString) ...