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Comparison for Java

Compare and check file differences using Java API

Develop Java applications with a highly configurable document comparison library to compare similar document formats, including files, their content, and text style.

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Version 24.8 released

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// Specify the source document
try (Comparer comparer = new Comparer("source.docx"))
{    
  // Add one or more target documents
  comparer.add("target.docx");

  // Specify comparison options
  CompareOptions options = new CompareOptions();
  options.setShowRevisions(false);

  // Compare and save result
  final comparer.compare("result.docx", options);
}

<dependency>
<groupId>com.groupdocs</groupId>
<artifactId>groupdocs-comparison</artifactId>
<version>24.8</version>
</dependency>

GroupDocs.Comparison at a glance

API to compare differences between documents in Java applications

File comparison in Java

Detect changes between source and target files at paragraph, word, and character levels. Identify styling and formatting changes such as bold, italic, underlines, strike-throughs, font types, and more.

Vast number of supported formats

With the GroupDocs.Comparison API, you can easily compare documents of multiple supported formats. This includes PDF, HTML, email, Microsoft Office Word documents, Excel spreadsheets, PowerPoint presentations, OneNote, Visio diagrams, texts, JPEG, PNG, GIF, and BMP images, as well as many other formats.

Apply or reject changes easily

Every difference between the compared documents can be applied or rejected and then exported to the output document.

Comparison summary report

Generate a summary report that lists all changes in the compared documents.

Platform independence

GroupDocs.Comparison for Java supports the following operating systems, frameworks and package managers

Supported file formats

GroupDocs.Comparison for Java supports operations with the following file formats.

Microsoft Office & OpenDocument formats

Word: DOCX, DOC, DOCM,DOT, DOTM, DOTX, RTX, RTF, TXT
Excel: XLSX, XLS, XLT, XLTM, XLSB, XLSM
PowerPoint: PPTX, PPT, POT, POTX, PPS, PPSX
Outlook: EML, EMLX, MSG
OneNote: ONE
OpenDocument: ODT, ODP, OTP, ODS, OTT
Fixed Page Layout: PDF

Images, Graphics & Diagrams

Raster images: BMP, GIF, JPG, JPEG, PNG
Medical Imaging: DICOM
Microsoft Visio: VSDX, VSD, VSS, VST, VDX
AutoCAD Drawing: DWG, DXF

Other

Text: TXT
Programming Languages: CS, Java, CPP, JS, PY, RB, PL, ASM, GROOVY, JSON, PHP, SQL, LOG, DIFF, LESS, SCALA
Web: HTM, HTML, MHT, MHTML
e-Books: MOBI, DjVu
Delimiter-Separated Values: CSV

GroupDocs.Comparison features

Easily compare PDF and Office documents, images and other formats

Easy to use document comparison

Easily analyze and pinpoint differences between two documents.

Compare multiple documents

Simultaneously examine and highlight variances across multiple documents.

Supported formats

Compatibility with over 50 widely-used document formats from diverse categories.

Accept or reject changes

Clear visualization of identified changes, with options to accept or reject modifications.

Generate previews

Capability to save comparison results as image previews.

Content comparison

Thorough comparison of text content on various levels - including line-by-line, paragraph, word, and character analysis, with emphasis on alterations.

Style comparison

Ability to detect and highlight alterations in formatting and style elements.

Set metadata

Option to retain metadata from source or target files, or permit user-defined metadata settings.

Password protection

Facilitates analysis of password-protected documents and enables password protection for the resultant documents.

Compare specific pages

Load and compare specific sections or pages of a document as required.

Display comments

Flexibility to display or conceal comments when loading the source document.

Code samples

Some use cases of typical GroupDocs.Comparison for Java operations

Comparing password-protected documents.

To compare documents that are protected with a password, you need to specify it then loading the documents:

How to compare password-protected documents.

// Load the source document and specify its password
try (Comparer comparer = new Comparer("source.docx", new LoadOptions("1234")))
{
    // Load the target document and specify its password
    comparer.add("target.docx", new LoadOptions("5678"));

    // Save comparison result to a specified file
    comparer.compare("result.docx");
}

Comparing multiple PDF documents.

GroupDocs.Comparison allows you to compare more than two documents. The operation is almost the same as when comparing two files. You just need to add more target files to the comparer class.

How to compare three or more documents.

// Load the source document
try (Comparer comparer = new Comparer("source.docx") 
{
    // Specify the second file for comparison
    comparer.add("target2.docx");

    // Specify the third file for comparison
    comparer.add("target3.docx");

    // Save comparison result to a specified file
    comparer.compare("result.docx");
}

Compare and check file differences using Java API

Compare DOCX files in Java

GroupDocs.Comparison at a glance

File comparison in Java

Vast number of supported formats

Apply or reject changes easily

Comparison summary report

Platform independence

Supported file formats

Microsoft Office & OpenDocument formats

Images, Graphics & Diagrams

Other

GroupDocs.Comparison features

Code samples

Comparing password-protected documents.

How to compare password-protected documents.

Comparing multiple PDF documents.

How to compare three or more documents.

Ready to get started?

Compare and check file differences using Java API

Compare DOCX files in Java

GroupDocs.Comparison at a glance

File comparison in Java

Vast number of supported formats

Apply or reject changes easily

Comparison summary report

Platform independence

Supported file formats

Microsoft Office & OpenDocument formats

Images, Graphics & Diagrams

Other

GroupDocs.Comparison features

Code samples

Comparing password-protected documents.

How to compare password-protected documents.

Comparing multiple PDF documents.

How to compare three or more documents.

Ready to get started?

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