Java By Comparison Pdf Github May 2026

private static List<String> findTextDifferences(String text1, String text2) List<String> differences = new ArrayList<>(); String[] lines1 = text1.split("\\r?\\n"); String[] lines2 = text2.split("\\r?\\n"); int maxLines = Math.max(lines1.length, lines2.length); for (int i = 0; i < maxLines; i++) if (i >= lines1.length) differences.add("Line " + (i+1) + ": Missing in first PDF: " + lines2[i]); else if (i >= lines2.length) differences.add("Line " + (i+1) + ": Missing in second PDF: " + lines1[i]); else if (!lines1[i].equals(lines2[i])) differences.add("Line " + (i+1) + " differs:\n PDF1: " + lines1[i] + "\n PDF2: " + lines2[i]); return differences;

public static class PageDifference private int pageNumber; private String text1; private String text2; public PageDifference(int pageNumber, String text1, String text2) this.pageNumber = pageNumber; this.text1 = text1; this.text2 = text2; // Getters public int getPageNumber() return pageNumber; public String getText1() return text1; public String getText2() return text2;

import java.io.*; import java.nio.file.*; import java.util.*; import org.kohsuke.github.*; public class PDFComparisonApp java by comparison pdf github

import org.apache.pdfbox.pdmodel.PDDocument; import org.apache.pdfbox.text.PDFTextStripper; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; import java.util.ArrayList; import java.util.List; import javax.imageio.ImageIO; public class PDFComparator

steps: - uses: actions/checkout@v3

// Method 3: Image-based comparison (requires PDF to image conversion) public static ComparisonResult compareByImages(String pdfPath1, String pdfPath2) throws IOException // Convert PDF pages to images first List<BufferedImage> images1 = convertPDFToImages(pdfPath1); List<BufferedImage> images2 = convertPDFToImages(pdfPath2); ComparisonResult result = new ComparisonResult(); result.setImagesIdentical(compareImages(images1, images2)); return result;

public static void main(String[] args) if (args.length < 2) System.out.println("Usage: java PDFComparisonApp <pdf1> <pdf2> [--github-token token] [--repo repo]"); return; String pdfPath1 = args[0]; String pdfPath2 = args[1]; try // Perform comparison PDFComparator.ComparisonResult textResult = PDFComparator.compareByText(pdfPath1, pdfPath2); PDFComparator.ComparisonResult pageResult = PDFComparator.comparePageByPage(pdfPath1, pdfPath2); // Generate report String report = generateReport(pdfPath1, pdfPath2, textResult, pageResult); // Save report saveReport(report, "comparison_report.txt"); // Upload to GitHub if token provided for (int i = 2; i < args.length; i++) if (args[i].equals("--github-token") && i + 1 < args.length) String token = args[i + 1]; String repo = (i + 2 < args.length && args[i + 2].equals("--repo")) ? args[i + 3] : null; uploadToGitHub(report, token, repo); break; catch (Exception e) System.err.println("Error comparing PDFs: " + e.getMessage()); e.printStackTrace(); "EQUAL" : "DIFFERENT")

private static String generateReport(String pdf1, String pdf2, PDFComparator.ComparisonResult textResult, PDFComparator.ComparisonResult pageResult) StringBuilder report = new StringBuilder(); report.append("PDF COMPARISON REPORT\n"); report.append("=====================\n\n"); report.append("File 1: ").append(pdf1).append("\n"); report.append("File 2: ").append(pdf2).append("\n"); report.append("Timestamp: ").append(new Date()).append("\n\n"); report.append("SUMMARY\n"); report.append("-------\n"); report.append("Text Comparison: ").append(textResult.isTextIdentical() ? "IDENTICAL" : "DIFFERENT").append("\n"); report.append("Page Count: ").append(pageResult.isPageCountsEqual() ? "EQUAL" : "DIFFERENT").append("\n\n"); if (!textResult.isTextIdentical() && textResult.getTextDifferences() != null) report.append("DETAILED DIFFERENCES\n"); report.append("--------------------\n"); for (String diff : textResult.getTextDifferences()) report.append(diff).append("\n\n"); return report.toString();