1. import java.io.*;
  3. public class LegacyEntryHandler {
  5. /**
  6. * Processes a single entry, handling potential failures gracefully.
  7. * @param filePath The path to the entry file.
  8. * @return True if the entry was processed successfully, false otherwise.
  9. */
  10. public static boolean processEntry(String filePath) {
  11. try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) {
  12. String line;
  13. while ((line = reader.readLine()) != null) {
  14. // Process the line - replace with your actual processing logic
  15. try {
  16. String processedLine = line.trim().toUpperCase(); // Example processing
  17. System.out.println("Processed: " + processedLine);
  18. // Add your data processing here
  19. } catch (Exception e) {
  20. System.err.println("Error processing line: " + line + ". Error: " + e.getMessage());
  21. //Log the error. Could write to a separate log file.
  22. }
  23. }
  24. } catch (FileNotFoundException e) {
  25. System.err.println("File not found: " + filePath + ". Error: " + e.getMessage());
  26. // Log the file not found error
  27. return false;
  28. } catch (IOException e) {
  29. System.err.println("IO Error reading file: " + filePath + ". Error: " + e.getMessage());
  30. // Log the IO error
  31. return false;
  32. }
  33. return true;
  34. }
  37. /**
  38. * Processes a list of entries.
  39. * @param filePaths An array of file paths to the entries.
  40. * @return The number of successfully processed entries.
  41. */
  42. public static int processEntries(String[] filePaths) {
  43. int successCount = 0;
  44. if (filePaths != null) {
  45. for (String filePath : filePaths) {
  46. if (processEntry(filePath)) {
  47. successCount++;
  48. }
  49. }
  50. }
  51. return successCount;
  52. }
  56. public static void main(String[] args) {
  57. // Example Usage
  58. String[] entryFiles = {"entry1.txt", "entry2.txt", "nonexistent.txt"}; // Replace with your actual file paths
  60. // Create dummy files for testing
  61. try (PrintWriter writer = new PrintWriter("entry1.txt")) {
  62. writer.println("This is entry 1");
  63. }
  64. try (PrintWriter writer = new PrintWriter("entry2.txt")) {
  65. writer.println("This is entry 2 with a potential error.");
  66. }
  68. int successfulProcesses = processEntries(entryFiles);
  69. System.out.println("Successfully processed " + successfulProcesses + " entries.");
  70. }
  71. }

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