1. import java.io.File;
  2. import java.util.HashMap;
  3. import java.util.Map;
  5. class FileMetadataAttacher {
  7. /**
  8. * Attaches metadata (file path) to a map. Handles edge cases like null or empty paths.
  9. *
  10. * @param filePaths A variable number of file paths to attach.
  11. * @return A map where keys are arbitrary identifiers and values are the file paths.
  12. * Returns an empty map if filePaths is null or empty.
  13. */
  14. public static Map<String, String> attachFileMetadata(String... filePaths) {
  15. Map<String, String> metadata = new HashMap<>();
  17. if (filePaths == null || filePaths.length == 0) {
  18. return metadata; // Return empty map for null or empty input
  19. }
  21. for (int i = 0; i < filePaths.length; i++) {
  22. String filePath = filePaths[i];
  24. if (filePath == null || filePath.trim().isEmpty()) {
  25. continue; // Skip null or empty paths
  26. }
  28. //Ensure the path is valid
  29. File file = new File(filePath);
  30. if (!file.exists()) {
  31. continue; // Skip if file doesn't exist
  32. }
  33. metadata.put("file_" + i, filePath); // Use a unique identifier
  34. }
  36. return metadata;
  37. }
  39. public static void main(String[] args) {
  40. //Example Usage
  41. Map<String, String> metadata = attachFileMetadata("path/to/file1.txt", "path/to/file2.txt", null, "");
  42. System.out.println(metadata); // Output the metadata map
  43. }
  44. }

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