In the previous chapters, you learned how to create and write to a file. 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.

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:

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 …

Feb 19, 2025 · In this article, you will learn about different ways to use Java to read the contents of a file line-by-line. This article uses methods from the following Java classes: java.io.BufferedReader, …

Nov 12, 2025 · Reading files is a fundamental operation in many Java applications, whether it's loading configuration data, processing text files, or working with binary data. Java provides several ways to …

Following are three most popular ways to create a file in Java −. Let's take a look at each of the way to read file in Java. FileInputStream is used for reading data from the files. Objects can be created …

Sep 11, 2021 · In this article, we will learn how we can read a file in java using various methods including Java desktop, FileInputStream, BufferedReader, FileReader, and Scanner class. All in all, …

Nov 3, 2025 · In Java, file handling means working with files like creating them, reading data, writing data or deleting them. It helps a program save and use information permanently on the computer.