1. import java.util.Arrays;
  3. public class CommandLineParser {
  5. public static void main(String[] args) {
  6. // Example usage: java CommandLineParser -name John -age 30 -city NewYork
  8. String[] argsArray = args;
  10. // Parse command-line arguments
  11. String name = null;
  12. int age = 0;
  13. String city = null;
  15. for (int i = 0; i < argsArray.length; i++) {
  16. String arg = argsArray[i];
  18. if (arg.startsWith("-name")) {
  19. name = arg.substring(5); // Extract value after "-name"
  20. } else if (arg.startsWith("-age")) {
  21. try {
  22. age = Integer.parseInt(arg.substring(4)); // Extract and parse age
  23. } catch (NumberFormatException e) {
  24. System.err.println("Invalid age provided: " + arg);
  25. return; // Exit if age is invalid
  26. }
  27. } else if (arg.startsWith("-city")) {
  28. city = arg.substring(5); // Extract value after "-city"
  29. }
  30. }
  32. // Print the parsed values
  33. System.out.println("Name: " + name);
  34. System.out.println("Age: " + age);
  35. System.out.println("City: " + city);
  36. }
  37. }

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