Assignment #101 and Key Chain

Code

                        /// Name: Graham Pollock
                        /// Period: 5
                        /// Program Name: Key Chain
                        /// File Name: KeyChain.java
                        /// Date Finished: 03/28/2016/

      import java.util.Scanner;
    
    public class KeyChains
    {
        public static void main(String[] args)
        {
            Scanner kb = new Scanner(System.in);
            
            System.out.println("The Kaychain shop");
            System.out.println("");
            System.out.println("1. Add Keychains to Order");
            System.out.println("2. Remove Keychains from Order");
            System.out.println("3. View Current Order");
            System.out.println("4. Checkout");
            System.out.println("");
            System.out.print("Your Choice: ");
            int choice = kb.nextInt();
            System.out.println("");
            
            while (choice != 4)
            {
                if ( choice == 1)
                    addKeychains();
                else if (choice == 2)
                    removeKeychains();
                else if (choice == 3)
                    viewOrder();
                else
                    System.out.println("ERROR: Please choose one of the options");
                System.out.println("");
                    System.out.println("1. Add Keychains to Order");
                    System.out.println("2. Remove Keychains from Order");
                    System.out.println("3. View Current Order");
                    System.out.println("4. Checkout");
                    System.out.println("");
                    System.out.print("Your Choice: ");
                    choice = kb.nextInt();
                    System.out.println("");
            }
            
            checkout();
        }
        
        public static void addKeychains()
        {
            System.out.println("ADD KEYCHAINS");
        }
        
        public static void removeKeychains()
        {
            System.out.println("REMOVE KEYCHAINS");
        }
        
        public static void viewOrder()
        {
            System.out.println("VIEW ORDER");
        }
        
        public static void checkout()
        {
            system.out.println("GOODBYE");
        }
    }   
    

Picture of the output