Question

Can someone fix the program below so it does what the picture says it won't work for me.

1-Write a subroutine that reads a word from the user. The subroutine gets the input from the keyboard and returns as output a string containing all the characters the user typed until either a space character is found or there are no more characters in the keyboard buffer. For example: If the user types the following input: Welcome to Disney World The first call to the subroutine should return "Welcome" The second time the subroutine is called, it returns "to" The third time the subroutine is called, it returns "Disney" The fourth time it should return "World" 2-Use the subroutine you wrote in part 1 to create a program that prompts a user for a username and password. If the username is not "Admin", the program should respond "The username is incorrect!". If the password is not "KoolAid", the program should respond "The password is incorrectl". If both, the username and password are incorrect then the program should respond "The username and password are both incorrect!!". If both of them are correct the program responds "Successful login attemptll" and then terminates. If the login attempt was not successful, the program should ask the user if they want to try again and allow them to enter their username/password again if so they want. That said, the maximum number of retries is ten times, so if the user gets it wrong ten times, the program should inform them that "You have exceeded the number of authorized login attempts." And then terminate. 3- Modify the program slightly so that the code that is in charge of verifying if a username & password are correct is in a subroutine instead of the main program. Do you think we could reuse that subroutine in future programs that we write? (answer using a comment next to the subroutine) For this assignment you will only need to submit one java file containing your final program after finishing part 3. This program will already contain the subroutine from part 1 and the work done in part

import java.util.Scanner;
public class Userpass {
static String arr[];
static int i = 0;
public static void main(String[] args) {
String username, password;
int tries = 0, result;
do {
System.out.print("Enter the username: ");
username = readUserInput();
System.out.print("Enter the password: ");
password = readUserInput();
result = verifyCredentials(username, password);
tries++;
if (result == -1)
System.out.println("The username is incorrect!\n");
else if (result == -2)
System.out.println("The password is incorrect!\n");
else if (result == -3)
System.out.println("The username and password are both incorrect!\n");
if (result == 1 || tries == 10) {
if (result == 1)
System.out.println("Successful login attempt!!\n");
else if (tries == 10)
{
System.out.println("You have exceeded the number of authorized login attempts.\n");
System.exit(0);
}
break;
}
} while (result != 1 || tries != 10);
Scanner sc = new Scanner(System.in);
System.out.println("Enter the input sentence");
String line = sc.nextLine();
String[] words = splitFunction(line);
for(String word : words){
System.out.println(word);
}
}
private static String readUserInput() {
Scanner sc = new Scanner(System.in);
String inp = sc.nextLine().trim();
String res = "";
for (int i = 0; i < inp.length(); i++) {
if (i == inp.length() || inp.charAt(i) == ' ')
break;
else
res += inp.charAt(i);
}
return res.trim();
}
private static String[] splitFunction(String str) {
arr = str.split(" ");
return arr;
}
private static int verifyCredentials(String username, String password) {
if (!username.equals("admin")) {
if (password.equals("koolaid"))
return -1;
else
return -3;
} else if (username.equals("admin")) {
if (password.equals("koolaid"))
return 1;
else if (!password.equals("koolaid"))
return -2;
}
return 0;
}
}

Answer 1

The program is working for me. we can make a few improvements here and there. if you're facing any particular issue, please be elaborate.

# If you have a query/issue with respect to the answer, please drop a comment. I will surely try to address your query ASAP and resolve the issue

//-----------------OUTPUT--------------------------------

Enter the username: abc Enter the password: koolaid The username is incorrect! Enter the username: admin Enter the password: abc The password is incorrect! Enter the username: adinin Enter the password: koolaid Successful login attempt!! Enter the input sentence wlcome to disney world wlcome to disney world

//-----------------------------------------------------

import java.util.Scanner;

public class Userpass {

    static String arr[];

    static int i = 0;

    public static void main(String[] args) {

        String username, password;

        int tries = 0, result;

        do {

            System.out.print("Enter the username: ");

            username = readUserInput();

            System.out.print("Enter the password: ");

            password = readUserInput();

            result = verifyCredentials(username, password);

            tries++;

            if (result == -1)

                System.out.println("The username is incorrect!\n");

            else if (result == -2)

                System.out.println("The password is incorrect!\n");

            else if (result == -3)

                System.out.println("The username and password are both incorrect!\n");

            if (result == 1 || tries == 10) {

                if (result == 1)

                    System.out.println("Successful login attempt!!\n");

                else if (tries == 10) {

                    System.out.println("You have exceeded the number of authorized login attempts.\n");

                    System.exit(0);

                }

                break;

            }

        } while (result != 1 || tries != 10);

        Scanner sc = new Scanner(System.in);

        System.out.println("Enter the input sentence");

        String line = sc.nextLine();

        String[] words = splitFunction(line);

        for (String word : words) {

            System.out.println(word);

        }

    }

    private static String readUserInput() {

        Scanner sc = new Scanner(System.in);

        String inp = sc.nextLine().trim();

        String res = "";

        for (int i = 0; i < inp.length(); i++) {

            if (i == inp.length() || inp.charAt(i) == ' ')

                break;

            else

                res += inp.charAt(i);

        }

        return res.trim();

    }

    private static String[] splitFunction(String str) {

        arr = str.split(" ");

        return arr;

    }

    private static int verifyCredentials(String username, String password) {

        if (!username.equals("admin")) {

            if (password.equals("koolaid"))

                return -1;

            else

                return -3;

        } else if (username.equals("admin")) {

            if (password.equals("koolaid"))

                return 1;

            else if (!password.equals("koolaid"))

                return -2;

        }

        return 0;

    }

}

//---------------------------------------------------------------