1. import java.io.BufferedWriter;
  2. import java.io.IOException;
  3. import java.nio.file.Files;
  4. import java.nio.file.Path;
  5. import java.nio.file.Paths;
  6. import java.util.List;
  8. public class UserDataExporter {
  10. /**
  11. * Exports user data to a file for diagnostics.
  12. * @param userData A list of user data objects.
  13. * @param outputFilePath The path to the output file.
  14. * @return True if the export was successful, false otherwise.
  15. */
  16. public boolean exportUserData(List<UserData> userData, String outputFilePath) {
  17. try {
  18. // Create the output file
  19. Path filePath = Paths.get(outputFilePath);
  20. if (Files.exists(filePath)) {
  21. Files.deleteIfExists(filePath); // Overwrite if exists
  22. }
  24. // Open the file for writing
  25. try (BufferedWriter writer = Files.newBufferedWriter(filePath)) {
  26. // Write user data to the file
  27. for (UserData user : userData) {
  28. writer.write(user.toString() + "\n"); // Assuming UserData has a toString() method
  29. }
  30. } catch (IOException e) {
  31. System.err.println("Error writing to file: " + e.getMessage());
  32. return false; // Indicate failure
  33. }
  34. return true; // Indicate success
  36. } catch (Exception e) {
  37. System.err.println("An unexpected error occurred: " + e.getMessage());
  38. return false;
  39. }
  40. }
  42. // Placeholder for UserData class
  43. public static class UserData {
  44. private String name;
  45. private String email;
  47. public UserData(String name, String email) {
  48. this.name = name;
  49. this.email = email;
  50. }
  52. @Override
  53. public String toString() {
  54. return "Name: " + name + ", Email: " + email;
  55. }
  56. }
  58. public static void main(String[] args) {
  59. // Example usage
  60. List<UserData> data = List.of(
  61. new UserData("Alice", "alice@example.com"),
  62. new UserData("Bob", "bob@example.com")
  63. );
  65. String outputFile = "user_data.txt";
  66. UserDataExporter exporter = new UserDataExporter();
  67. boolean success = exporter.exportUserData(data, outputFile);
  69. if (success) {
  70. System.out.println("User data exported successfully to " + outputFile);
  71. } else {
  72. System.err.println("User data export failed.");
  73. }
  74. }
  75. }

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