Compare Documents in Java

readme.md

Read the complete article on how to compare documents in Java: https://blog.aspose.com/total/document-comparison-in-java/

compare-pdf.java

// Load PDF files
Document PDF1 = new Document("first.pdf");
Document PDF2 = new Document("second.pdf");

// Convert PDF files to editable Word format
PDF1.save("first.docx", SaveFormat.DOCX);
PDF2.save("second.docx", SaveFormat.DOCX);

// Load converted Word documents
Document DOC1 = new Document("first.docx");
Document DOC2 = new Document("second.docx");

// Set comparison options
CompareOptions options = new CompareOptions();
options.setIgnoreFormatting(true);
options.setIgnoreHeadersAndFooters(true);
options.setIgnoreCaseChanges(true);
options.setIgnoreTables(true);
options.setIgnoreFields(true);
options.setIgnoreComments(true);
options.setIgnoreTextboxes (true);
options.setIgnoreFootnotes(true);

// DOC1 will contain changes as revisions after comparison
DOC1.compare(DOC2, "user", new Date(), options);

if (DOC1.getRevisions().getCount() > 0)
    // Save resultant file as PDF
    DOC1.save("compared.pdf", SaveFormat.PDF);
else
    System.out.println("Documents are equal");

compare-ppt.java

// Load presentations
Presentation presentation1 = new Presentation("first.pptx");
try {
    Presentation presentation2 = new Presentation("second.pptx");
    try {
        // Loop through slides
        for (int i = 0; i < presentation1.getMasters().size(); i++)
        {
            for (int j = 0; j < presentation2.getMasters().size(); j++)
            {
                // Compare slides
                if (presentation1.getMasters().get_Item(i).equals(presentation2.getMasters().get_Item(j)))
                    System.out.println(String.format("SomePresentation1 MasterSlide#%d is equal to SomePresentation2 MasterSlide#%d", i, j));
            }
        }
    } finally {
        presentation2.dispose();
    }
} finally {
    presentation1.dispose();
}

compare-word.java

// Load Word documents
Document DOC1 = new Document("first.docx");
Document DOC2 = new Document("second.docx");

// Set comparison options
CompareOptions options = new CompareOptions();
options.setIgnoreFormatting(true);
options.setIgnoreHeadersAndFooters(true);
options.setIgnoreCaseChanges(true);
options.setIgnoreTables(true);
options.setIgnoreFields(true);
options.setIgnoreComments(true);
options.setIgnoreTextboxes (true);
options.setIgnoreFootnotes(true);

// DOC1 will contain changes as revisions after comparison
DOC1.compare(DOC2, "user", new Date(), options);

if (DOC1.getRevisions().getCount() > 0)
    // Save with comparison results
    DOC1.save("compared.docx", SaveFormat.DOCX);
else
    System.out.println("Documents are equal");