Question

I am currently compiling a PasswordChecker Java program.
The program has three rules:

1. must have 3 characters.

2. must have at least 1 UPPERCASE letter.

3. must have at least 1 lowercase letter.

The program executes the first system.out.print but the program fails when I put in 3 characters w/1uppercase & 1digit. I can’t see where I am going wrong. Please assist!

————————————————————————————————————————————-

package passwordchecker;

import java.util.Scanner;

public class PasswordChecker {

  public static void main(String[] args) {

    Scanner scnr = new Scanner(System.in); 

    String password; //Initiates string and boolean 

    int passwordLength = 0;

    boolean upperCheck = false; 

    boolean digitCheck = false; 

    boolean lengthCheck = false;

    System.out.println(“Please enter a 3 character password with at least one UPPERCASE letter and one digit: “); 

    password = scnr.nextLine();

    if (password.length()== 3){

      lengthCheck = true; 

    if (Character.isUpperCase(0)){

      upperCheck = true; 

    }

    if (Character.isUpperCase(1)){

      upperCheck = true; 

    } 

    if (Character.isUpperCase(2)){

      upperCheck = true; 

    }

    if (Character.isDigit(password.charAt(0))){

      digitCheck = true;

    }

    if (Character.isDigit(password.charAt(1))){

      digitCheck = true;

    }

    if (Character.isDigit(password.charAt(2))){

      digitCheck = true;

    }

  }

  if (lengthCheck == true && upperCheck == true && digitCheck == true){

    System.out.println(“The password provided is valid.”); 

  }

  else {

    System.out.println(“The password provided is invalid. Please try again.”);

    }

    }

  }

 

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