Assignemnt #103

Code

/// Name: Justin Li
/// Period: 7
/// Program Name: Keychains
/// Date Completed: 2/16/16

import java.util.Scanner;

public class Keychains
{
    public static void main( String[] args )
    {
    
        Scanner bot = new Scanner(System.in);
        System.out.println("Ye Olde Keychain Shoppe");
        System.out.println();
        
        int selection = 0, keyNum = 0, keyCost = 10;
        double salesTax = .0825, shipping = 5.00, perKeychainShipping = 1.00;
        
        
        
        while ( selection != 4 )
        {
            System.out.println("1.\tAdd Keychains to Order");
            System.out.println("2.\tRemove Keychains from Order");
            System.out.println("3.\tView Current Order");
            System.out.println("4.\tCheckout");
            System.out.println("");
            
            System.out.println("Please enter your choice: ");
            selection = bot.nextInt();
            
            if ( selection == 1 )
                keyNum=addKeychains(keyNum);
            else if ( selection == 2 )
                keyNum=removeKeychains(keyNum);
            else if ( selection == 3 ) 
                viewOrder(keyNum,keyCost,salesTax,shipping,perKeychainShipping);
            else if ( selection == 4 )
                checkout(keyNum,keyCost,salesTax,shipping,perKeychainShipping);
            else
            {
                while ( selection > 4 || selection < 1 );
                {
                    System.out.println("Whoops. You didn't select a valid option. Try again.");
                    
                    System.out.println("");
                    System.out.println("1.\tAdd Keychains to Order");
                    System.out.println("2.\tRemove Keychains from Order");
                    System.out.println("3.\tView Current Order");
                    System.out.println("4.\tCheckout");
                    System.out.println("");

                    System.out.println("Please enter your choice: ");
                    selection = bot.nextInt();
                    
                }
            }
            
        }
    
    }
    
    public static int addKeychains( int keys )
    {   
        int keyDiff;
        Scanner bot = new Scanner(System.in);
        System.out.println("ADD KEYCHAINS");
        System.out.println("");
        
        System.out.println("You have " + keys + ". How many would you like to add?");
        keyDiff =  bot.nextInt();
        keys = keys + keyDiff;
        
        System.out.println("");
        System.out.println("You now have " + keys + " keychains.");
        System.out.println("");
        
        return keys;
    }
    
    public static int removeKeychains( int keys )
    {
        int keyDiff;
        ;
        Scanner bot = new Scanner(System.in);
        System.out.println("REMOVE KEYCHAINS");
        System.out.println("");
        
        System.out.println("You have " + keys + ". How many would you like to remove?");
        keyDiff = bot.nextInt();
        
        
        int test = keys - keyDiff;
        
        while ( test < 0 )
        {
            System.out.println("Whoops. Can't have negative keychains.");
            System.out.println("Try again: ");
            keyDiff = bot.nextInt();
            
            test = keys - keyDiff;
        }
        
        keys = keys - keyDiff;
        
        System.out.println("");
        return keys;
    }
    
    public static void viewOrder( int keys, int keyPrice, double salesTax, double shipping, double perKeychainShipping )
    {        
        System.out.println("VIEW ORDER");
        System.out.println("");
        
        double salesTaxMultiplier = 1 - salesTax;
        
        double total = keys*keyPrice*salesTaxMultiplier + shipping + perKeychainShipping*keys;
        
        System.out.println("You have " + keys + ".");
        
        if ( keys <= 0 )
            System.out.println("Keychains cost $10 each, meaning your total is $0.00.");
        else 
            System.out.println("Keychains cost $10 each, meaning your total is $" + total + ".");
           
                 
        System.out.println("");
        
    }
    
    public static void checkout( int keys, int keyPrice, double salesTax, double shipping, double perKeychainShipping )
    {   
        Scanner bot = new Scanner(System.in);
        System.out.println("CHECKOUT");
        System.out.println("");
        
        
        System.out.println("What is your name?");
        String name = bot.next();
        double salesTaxMultiplier = 1 - salesTax;
        
        double total = keys*keyPrice*salesTaxMultiplier + shipping + perKeychainShipping*keys;
        
        if ( keys <= 0 )
            System.out.println("Keychains cost $10 each, meaning your total is $0.00.");
        else 
            System.out.println("Keychains cost $10 each, meaning your total is $" + total + ".");
        
        System.out.println("");
        System.out.println("Thanks for your order, " + name + "!");
    }
    

}  
    

Picture of the output