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  1. import java.util.Scanner;
  2.  
  3. public class Main
  4. {
  5.  
  6. public static void main(String[] args) 
  7. {
  8. 	final Scanner input = new Scanner(System.in);
  9.  
  10. 	while (true)
  11. 	{
  12. 		System.out.print("Enter your password:");
  13. 		final String password = input.nextLine();
  14.  
  15. 		boolean haslowercase = false;
  16. 		boolean hasuppercase = false;
  17. 		boolean hasdigit = false;
  18. 		for (int i = 0; i < password.length(); i++) {
  19. 			final Character c = password.charAt(i);
  20. 			haslowercase = haslowercase || Character.isLowerCase(c);
  21. 			hasuppercase = hasuppercase || Character.isUpperCase(c);
  22. 			hasdigit = hasdigit || Character.isDigit(c);
  23. 		}
  24. 		final boolean passwordlength = (password.length() >= 6);
  25.  
  26. 		if (!haslowercase)
  27. 			System.out.println("Password needs to contain at least one lowercase letter");
  28. 	  	if (!hasuppercase) 
  29. 			System.out.println("Password needs to contain at least one uppercase letter");
  30. 		if (!hasdigit)
  31. 			System.out.println("Password needs to contain at least one digit");
  32. 		if (!passwordlength)
  33. 			System.out.println("Password needs to have 6 or more characters");
  34. 		if (!haslowercase || !hasuppercase || !hasdigit || !passwordlength)
  35. 			continue;
  36.  
  37. 		System.out.print("Enter password again to verify");
  38. 		final String password2 = input.nextLine();
  39.  
  40. 		if (password.equals(password2)) { 
  41. 	  		System.out.println("You have entered a valid password");
  42. 	  		break;
  43. 		} else {
  44. 			System.out.println("Password does not match. Start over");
  45. 			continue;
  46. 		}
  47. 	}
  48. }
  49.  
  50. }
Success #stdin #stdout 0.1s 380672KB
comments (?)
stdin 
short
lowercase
UPPERCAS3
l33t
Valid passw0rd
Valid p4ssword
abcABC123
abcABC123
stdout 
Enter your password:Password needs to contain at least one uppercase letter
Password needs to contain at least one digit
Password needs to have 6 or more characters
Enter your password:Password needs to contain at least one uppercase letter
Password needs to contain at least one digit
Enter your password:Password needs to contain at least one lowercase letter
Enter your password:Password needs to contain at least one uppercase letter
Password needs to have 6 or more characters
Enter your password:Enter password again to verifyPassword does not match. Start over
Enter your password:Enter password again to verifyYou have entered a valid password
https://ideone.com/XaRh2U
language:
Java (HotSpot 12)
created:
11 years ago
visibility:
secret

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