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richard phillips
string object
1 Answer(s)      6 years and 2 months ago
Posted in : Java Beginners

Hi, how do i write a program that works with a user's password, when the program should prompt the user for a possible password, that is between 6 and 10 characters long, that contains at least one letter, and contains at least one digit?

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March 1, 2011 at 1:17 PM


Java Password Validation

import java.util.*;
import java.util.regex.*;

public class ValidatePassword{
      public static void main(String[]args){
          Scanner input=new Scanner(System.in);
          System.out.print("Enter password: ");
      String st=input.nextLine();
      Pattern p = Pattern.compile("((?=.*\\d)(?=.*[a-z][A-Z]).{6,10})");
      Matcher m = p.matcher(st);
      if(m.find()){
          System.out.println("Valid");
      }
      else{
          System.out.println("Not Valid");
      }
      }
     }









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