Kotlin Programming Cookbook

How to do it…

There are a lot of ways to go about reading from a file, but it is very important to understand the motivation behind them so as to be able to use the correct one for our purpose:

1. First, we will try to get the InputStream of the file and use the reader to read the contents:

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

2. In the preceding code block, lorem.txt is simply a file that we want to read. The file is located in the same folder as our code source file. If we need to read a file located in a different folder, it looks similar to the following: ...