1. import java.io.*;
  2. import java.util.*;
  3. import java.util.regex.Matcher;
  4. import java.util.regex.Pattern;
  6. public class HtmlGrouper {
  8. private static final String HTML_FILE_PATH = "input.html"; // Replace with your HTML file
  9. private static final String OUTPUT_FILE_PATH = "output.txt"; // Replace with your desired output file
  10. private static final String GROUP_START_TAG = "<div class=\"group\">"; // Tag to identify groups
  11. private static final String GROUP_END_TAG = "</div>"; // Tag to identify end of groups
  13. public static void main(String[] args) {
  14. try {
  15. groupHtmlEntries(HTML_FILE_PATH, OUTPUT_FILE_PATH);
  16. System.out.println("Grouping complete. Output written to " + OUTPUT_FILE_PATH);
  17. } catch (IOException e) {
  18. System.err.println("Error processing HTML: " + e.getMessage());
  19. e.printStackTrace();
  20. }
  21. }
  23. public static void groupHtmlEntries(String inputFilePath, String outputFilePath) throws IOException {
  24. try (BufferedReader reader = new BufferedReader(new FileReader(inputFilePath));
  25. BufferedWriter writer = new BufferedWriter(new FileWriter(outputFilePath))) {
  27. String line;
  28. boolean inGroup = false;
  30. while ((line = reader.readLine()) != null) {
  31. if (line.contains(GROUP_START_TAG)) {
  32. inGroup = true;
  33. writer.write(line); // Write the start tag
  34. } else if (line.contains(GROUP_END_TAG)) {
  35. inGroup = false;
  36. writer.write(line); // Write the end tag
  37. } else if (inGroup) {
  38. writer.write(line); // Write lines within the group
  39. }
  40. }
  41. }
  42. }
  43. }

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