How to read a File in One Line in Java? Files.readAllLines() Example Tutorial

Reading a file in Java is not simple, it requires lots of boilerplate code, as we have seen in our earlier example of reading text files. Various things had to be wrapped e.g. a FileInputStream inside a BufferedReader, loops with weird terminating conditions had to be specified, and so forth. From JDK 7 onward,  you can do a lot better. It provides lots of useful classes like Files and Paths to deal with file and their actual path. In this article, we will see how we can read a file in just one line. Of course, your production code won't be like that, especially if you are reading a few gigabytes into memory and want to pay attention to the character set, if you don't specify, by platform's default character encoding will be used.