Discover how to compare text files in Java with our concise, step‑by‑step guide. Follow these instructions to compare two large text files in Java and build a functional sample code that runs on any platform—Windows, Linux, or macOS. Below you’ll find detailed steps and ready‑to‑use example code for seamless file comparison.

Steps to Compare Text Files in Java

1. Install GroupDocs.Comparison for Java from the Maven repository in the Java application
2. Import essential classes for comparing text files using Java
3. Create an instance of the Comparer class and pass the source text file to its constructor
4. Call the add method of the Comparer class and specify the target file path for developing compare text files Java capability
5. Finally, call the compare method and pass the resultant file path for text files comparison

In the above section, we have explained the steps to develop the compare two text files Java functionality. You can start loading the source text file by initializing the Comparer class after installing the required library and importing the necessary classes. Then, load the target text file by calling the add method and finally use compare method for comparing the two text files.

Code to Compare Text Files in Java

We’ve built the Java code to compare two text files word by word to demonstrate this feature in action. The document comparison is achieved with just a few API calls and a handful of lines of code. Moreover, the same API can compare many other document types—including PDF, DOC, JPG, EML, MSG, DWG, MOBI, CSV, and more.

In this guide we walked through each step of document comparison and leveraged the text‑comparison API to enable Java to compare two text files. If you’re also interested in handling PDFs, check out our recent article on comparing PDF files in Java – see how to Compare PDF Files using Java for more details.