Compare CSV Files in Java

Perform a line-by-line comparison between more than two CSV files in Java. Retrieve a list of differences and save the compared files to a single document.


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About GroupDocs.Comparison for Java API

Empower your Java applications with images and documents comparison features using GroupDocs.Comparison for Java API. It helps you identify the differences within paragraphs, words, characters, shapes, even the text styles of the compared documents of same format, allows merging the changes and export to a final document. It supports comparing and merging a wide range of documents including PDF, Word, Excel worksheets, PowerPoint presentations, Visio diagrams, Outlook emails, HTML, drawings and image file formats without using any external library.

Steps for Comparing CSV Files in Java

GroupDocs.Comparison makes it easy for Java developers to compare CSV files within their applications using a few lines of code.

  • Instantiate Comparer object with source document path or stream.
  • Call add method and specify target document path or stream.
  • Call compare method.

System Requirements

GroupDocs.Comparison for Java APIs are supported on all major platforms and operating systems. Before executing the code below, please make sure that you have the following prerequisites installed on your system.

  • Operating Systems: Microsoft Windows, Linux, MacOS
  • Development Environment: NetBeans, Intellij IDEA, Eclipse etc
  • Java Runtime Environment: J2SE 6.0 and above
  • Get the latest version of GroupDocs.Comparison for Java from Maven

// Compare documents from local file

try (Comparer comparer = new Comparer("C:\\source.csv")) {
    comparer.add("C:\\target.csv");
    comparer.compare("C:\\result.csv"); // Create result file with the specified name
}

// Compare documents from stream

try (Comparer comparer = new Comparer(new FileInputStream("C:\\source.csv"))) {
    comparer.add(new FileInputStream("C:\\target.csv"));
    comparer.compare(new FileOutputStream("C:\\result.csv")); // Create result file with the specified name
}

Live Demos to Compare CSV Files

Compare CSV files right now by visiting GroupDocs.Comparison Live Demos website.
The live demo has the following benefits

No need to download API

No need to write any code

Just upload the source file

Get download link to save the file

About CSV File Format

Files with CSV (Comma Separated Values) extension represent plain text files that contain records of data with comma separated values. Each line in a CSV file is a new record from the set of records contained in the file. Such files are generated when data transfer is intended from one storage system to another. Since all applications can recognize records separated by comma, import of such data files to database is done very conveniently. Almost all spreadsheet applications such as Microsoft Excel or OpenOffice Calc can import CSV without much effort. Data imported from such files is arranged in cells of a spreadsheet for representation to user.

Read More About CSV File Format

Compare Other File Formats

Multi format images & documents comparison API for Java. Compare some of the popular file formats below without any external software.

Compare PDF Files

(Adobe Portable Document Format)

Compare DOC Files

(Microsoft Word Document)

Compare DOCM Files

(Microsoft Word Macro-Enabled Document)

Compare DOCX Files

(Microsoft Word Open XML Document)

Compare DOT Files

(Microsoft Word Document Template)

Compare DOTM Files

(Microsoft Word Macro-Enabled Template)

Compare DOTX Files

(Word Open XML Document Template)

Compare RTF Files

(Rich Text File Format)

Compare TXT Files

(Plain Text File Format)

Compare XLS Files

(Microsoft Excel Binary File Format)

Compare XLSX Files

(Microsoft Excel Open XML Spreadsheet)

Compare XLTM Files

(Microsoft Excel macro-enabled template)

Compare XLSM Files

(Microsoft Excel Macro-Enabled Spreadsheet)

Compare XLSB Files

(Microsoft Excel Binary Spreadsheet File)

Compare PPT Files

(PowerPoint Presentation)

Compare PPS Files

(Microsoft PowerPoint Slide Show)

Compare PPTX Files

(PowerPoint Open XML Presentation)

Compare PPSX Files

(PowerPoint Open XML Slide Show)

Compare POT Files

(Microsoft PowerPoint template)

Compare POTX Files

(Microsoft PowerPoint Open XML Template)

Compare ODS Files

(Open Document Spreadsheet)

Compare ODP Files

(OpenDocument Presentation File Format)

Compare OTP Files

(Origin Graph Template)

Compare ODT Files

(Open Document Text)

Compare OTT Files

(Open Document Template)

Compare VST Files

(Microsoft Visio 2003-2010 XML Drawing)

Compare JPEG Files

(JPEG Image)

Compare PNG Files

(Portable Network Graphic)

Compare GIF Files

(Graphical Interchange Format File)

Compare BMP Files

(Bitmap File Format)

Compare HTML Files

(Hyper Text Markup Language)

Compare MHTML Files

(MIME Encapsulation of Aggregate HTML)

Compare MSG Files

(Microsoft Outlook E-mail Message)

Compare EML Files

(E-mail Message)

Compare EMLX Files

(Apple Mail E-mail File)

Compare ONE Files

(Microsoft OneNote)

Compare VSD Files

(Microsoft Visio 2003-2010 Drawing)

Compare VSDX Files

(Microsoft Visio Drawing)

Compare VSS Files

(Microsoft Visio 2003-2010 Stencil)

Compare VST Files

(Microsoft Visio 2003-2010 Template)

Compare VDX Files

(Microsoft Visio 2003-2010 XML Drawing)

Compare CS Files

(CSharp Language)

Compare Java Files

(Java Language)

Compare CPP Files

(C++ Language)

Compare JS Files

(JavaScript Language)

Compare PY Files

(Python Language)

Compare RB Files

(Ruby Language)

GroupDocs.Comparison offers document viewing APIs for other popular formats

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