Question

This is OOP using Bluej

Your goal is to create and run two test scenarios to demonstrate the functionality of the shopping cart transaction classes.

1. The first scenario is the scenario covered in the lecture session.

2. The second scenario is a slight variation of the first:

a. The user adds three items

b. Requests a display of the shopping cart items and total

c. Removes one item

d. Confirms the cart and makes an order

e. The user submits a payment, however, the payment is not valid

f. The user is sent a regret email notifying them that the order was unsuccessful

Each scenario should be contained in its own test method. Your solution for each scenario is only allowed to use the following classes. These are the classes we identified together in the lecture.

• Customer • ShoppingCart • Item • Order • Address • Payment • Email • TransactionTest

ShoppingCart:

It should be clear how to implement all the methods needed here. Some are 'getter' methods, others are add/remove methods for adding/removing items from the ShoppingCart's ArrayList. The one method that might not be clear is the one called 'close()'. When the close() method is called, items cannot be added or removed from the ShoppingCart. If you try to call the ShoppingCart's add(Item item) method after the close method is called, it will printout an error: "Sorry the shopping cart is closed". Hint: you should use a boolean variable to implement this. If its value is false, you can add/remove items; if its value is true, you cannot add/remove items

Item:

You already have the code for the Item class

Order:

The role of the Order class is to take a ShoppingCart object and transfer its items one by one into itself. It should also take the information about the Customer. Once this is done, the ShoppingCart should be empty. i.e. its Arraylist should be empty. Order is an important class in this programme. Look over the lecture notes to see the list of methods that we provisionally assigned to it. It will have relationships with several other objects such as ShoppingCart, Payment, Address and Email

Address:

The role of the Address class is to hold the address fields of the Customer's address: e.g. street, city, zip, country. A customer may have two Address objects associated with them - a billing address and a delivery address. You will need methods to set and get the information in each Address object

Payment:

The Payment class holds the following pieces of information

• customer; • credit card type; • credit card number; • date; • address; • credit card bank name

As an object that is in charge of verifying its own information, the Payment class also has code for validating the data submitted. For example, a new Payment object might be created as follows:

Payment payment1 = new Payment(customer1, address1, "NasterCard", 16534, 26.66, "05/10/2018") ;

or since the Order object contains most of the information you need, you could have an alternative constructor for Payment that takes an order object as an input parameter.

Payment payment1 = new Payment(order, "NasterCard", "05/10/2018") ;

You will need to write some code to make sure that the Card type is either "MasterCard" or "Visa". Clearly, "NasterCard" is not valid.

A bonus challenge would be that you check that the card number has the correct number of digits (not like 16534 above).

A bonus++ challenge is to check if the date is in the future. However, the minimum you need to do is the Card Type check.

If the input information is correct, then the Payment object should set a boolean field called 'valid'. This will allow you to define a method called isValid() which returns the value of the field. If it is true, it will run otherwise it will not run the body of the ‘if’ statement.

You can then write the following in your test code

if(payment1.isValid()){

//do something }

else{

// do something (print a message that the payment is not valid)

}

Email:

The role of the Email object is to send (you are required to just printout on the screen) an email message to the customer. If the Payment has been successful, then it will be a positive message giving the order number, the order details, the delivery and billing addresses. If the Payment has been unsuccessful, then the message explains that the order has not been made. In either case, the customer must be addressed by their first name and the email address is their email address (from the Customer object).

TransactionTest:

As illustrated in the lectures, this is a test class. It should have two methods - one for each scenario. They are executed from the main method, which is contained by the TransactionTest class

Answer 1

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Bhai itana bada question , tho answer kitna bada hoga.

I am in 10 standard in icse and I know Java language very well but ask questions of my level...⚓⚓

Sorry mate!!!

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