Nov 17, 2025 · In Java, there are multiple ways to read a text file depending on your data size and use case. The java.io and java.nio.file packages provide several classes to handle file reading efficiently.

I documented 15 ways to read a file in Java and then tested them for speed with various file sizes - from 1 KB to 1 GB and here are the top three ways to do this:

In the following example, we use the Scanner class to read the contents of the text file we created in the previous chapter:

Jan 8, 2024 · In this tutorial, we’ll explore different ways to read from a File in Java. First, we’ll learn how to load a file from the classpath, a URL, or from a JAR file using standard Java classes.

There are a wide array of file I/O methods to choose from. To help make sense of the API, the following diagram arranges the file I/O methods by complexity. On the far left of the diagram are the utility …

Nov 12, 2025 · Whether you're building a simple data processing script or a large-scale enterprise application, being able to read text from files is essential. This blog post will explore different ways to …

Jul 10, 2024 · Java read text files tutorial shows how to read text files in Java. We use build-in tools including FileReader, InputStreamReader, and Scanner.

Jul 23, 2025 · To read a text file we can use the readAllBytes () method of Files class with which using this method, when you need all the file contents in memory as well as when you are working on small …

Feb 19, 2025 · Learn how to read files in Java with examples. Explore methods like FileReader, BufferedReader, Scanner, and NIO for efficient file reading.

Learn how to read files in Java with examples and best practices. This guide covers various methods for file handling and reading data efficiently.