For each problem, study the supplied code, and list the code smells you see. For this exercise the code smells should be one of these:

• long method,
• large class,
• duplicate code (aka cut and paste code),
• long parameter list,
• primitive obsession, and
• magic numbers.

For each code smell,

• list the line numbers of the code where the smell is focused,
• identify the design principle(s) that are violated, and
• identify some program change that the smell would complicate.

1. Code fragment

   Smells and locations?

   Design principles?

   Maintenance Consequences?

static WarehouseWorker workerLogin() throws Exception { System.out.println(":: WORKER LOGIN ::"); Scanner sc = new Scanner(System.in); System.out.println("Enter username:"); String username = sc.next(); int input; if (Service.userAndPasswords.containsKey(username) == false) { System.out.println("Username doesn't exist, try again or sign up"); System.out.println("(1) Try again"); System.out.println("(2) Sign Up"); input = sc.nextInt(); if(input == 1) { Service. loginHelper(); }else if (input == 2) { Service. signup(); }else { throw new Exception("Bad User Input"); String check = Service.userAndPasswords.get(username); while(true) { System.out.println("Enter password:"); String password = sc.next(); if (check.equals(password)) { System.out.println("Welcome Back!"); break; } else { System.out.println("Wrong password!"); System.out.println("(1) Try with different username"); System.out.println("(2) Retry password"); input = sc.nextInt(); if(input == 1) { Service. loginHelper(); return getWarehouseWorkerByUsername (username); static Customer customerLogin() throws Exception{ //just a placeholder to look like login page System.out.println(":: CUSTOMER LOGIN : :"); Scanner sc = new Scanner(System.in); System.out.println("Enter username:"); String username = sc.next(); int input; if(Service.userAndPasswords. containsKey (username) == false) { System.out.println("Username doesn't exist, try again or sign up"); System.out.println("(1) Try again"); System.out.println("(2) Sign Up"); input = sc.nextInt(); if(input == 1) { Service. loginHelper(); }else if (input == 2) { Service.signup(); }else { throw new Exception ("Bad User Input"); String check = Service.userAndPasswords.get(username); while(true) { System.out.println("Enter password:"); String password = sc.next(); if (check.equals(password)) { System.out.println("Welcome Back!"); break; } else { System.out.println("Wrong password!"); System.out.println("(1) Try with different username"); System.out.println("(2) Retry password"); input = sc.nextInt(); if(input == 1) { Service. loginHelper(); Customer cust = findCustomerByUsername (username); return cust