We walk you through each step of how to compare CSV files in Java in this how-to tutorial. To compare the two CSV files, we will use one of the best document comparison libraries. You do not need to install any additional software and MS Office for implementing comparison functionality. A Java compare CSV files capability will also be developed by using the procedures outlined in this tutorial.

Steps to Compare CSV Files in Java

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

We have outlined the points above that can be easily used for the implementation of the compare CSV files Java capability. Install the document comparison library from the Maven repository in the first step, then import the necessary classes. Next, add the target CSV file by using the Comparer class’ add function after loading the source CSV file by making an instance of the Comparer class. To store the resulting file on the disc, next invoke the compare method of the Comparer class.

Code to Compare CSV Files in Java

In the above example, we have developed the functionality to compare two CSV files in Java. We have written a three-four line of code and consumed a few API calls for developing the CSV files comparison feature. In this example code, we have compared two CSV files, but you can add more files for comparison by repeating step 4.

We have gone over the specific procedures for implementing the Java compare two CSV files feature in-depth and created sample code for it. Recently, we had published an article on comparing text files in Java, visit how to Compare Text Files in Java guide for more information.