java - How to solve the else/if problems in password input?

Question

I wrote a program that users can login. Below u see some codes that I wrote for the password input but the second if of them does not work properly.

Please help me to find the problem. Why it does not work?

import java.util.Scanner;

public class Password {

    public static void main(String[] args) {
        Scanner passwordInput = new Scanner(System.in);
        System.out.print("Please enter your password: ");
        int builtInPassword = 1254;

        if (passwordInput.hasNextInt() && passwordInput.nextInt() == builtInPassword) {
            System.out.println("Your password is correct.");
        } else if (passwordInput.hasNextInt() && passwordInput.nextInt() != builtInPassword) {
            System.out.println("The password entered is incorrect");
        } else {
            System.out.println("Sorry, please enter the right format");
        }
    }
}

Answer 1

The problem is that you call nextInt() in all ifs. This way you basically wait for another input each time you call passwordInput.nextInt().

Try to save the user input and then check it for the password. Something like:

if (passwordInput.hasNextInt()) {
    int pass = passwordInput.nextInt();
    if (pass == builtInPassword) {
        System.out.println("Your password is correct.");
    } else {
        System.out.println("The password entered is incorrect");
    }
} else {
    System.out.println("Sorry, please enter the right format");
}

I am writing without a compiler here so I am not sure it will compile properly but you can get the idea ;)