1. import java.io.BufferedReader;
  2. import java.io.FileReader;
  3. import java.io.IOException;
  4. import java.util.ArrayList;
  5. import java.util.List;
  7. public class LogValidator {
  9. public static void main(String[] args) {
  10. List<String> logFiles = List.of("log1.txt", "log2.txt"); // Replace with your log file names
  12. for (String logFile : logFiles) {
  13. try {
  14. validateLogFile(logFile);
  15. } catch (IOException e) {
  16. System.err.println("Error processing log file " + logFile + ": " + e.getMessage());
  17. } catch (Exception e) {
  18. System.err.println("Unexpected error processing log file " + logFile + ": " + e.getMessage());
  19. }
  20. }
  21. }
  23. public static void validateLogFile(String logFile) throws IOException {
  24. try (BufferedReader reader = new BufferedReader(new FileReader(logFile))) {
  25. String line;
  26. int lineNumber = 1;
  27. boolean validationSuccessful = true;
  29. while ((line = reader.readLine()) != null) {
  30. // Perform your validation checks on each line here
  31. if (!isValidLine(line)) {
  32. System.err.println("Validation failed on line " + lineNumber + ": " + line);
  33. validationSuccessful = false;
  34. }
  35. lineNumber++;
  36. }
  38. if (validationSuccessful) {
  39. System.out.println("Log file " + logFile + " validation successful.");
  40. } else {
  41. System.err.println("Log file " + logFile + " validation failed.");
  42. }
  43. }
  44. }
  46. private static boolean isValidLine(String line) {
  47. // Replace this with your actual validation logic
  48. // This is just a placeholder example - check if line contains "ERROR"
  49. return line.contains("ERROR");
  50. }
  51. }

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