NSC Information Technology Object-oriented programming: Complete the code as specified i

Question

Complete the code as specified in QUESTION 3.1 for the Transaction_U object and QUESTION 3.2 for the Question3_U form class.

3.1 The incomplete object class (Transaction) provided contains four attributes and an incomplete toString method that defines a Transaction object.

- ContainerSize: Indicates the size of the container selected (S = Small, M = Medium, L = Large)
- StoragePeriod: Indicates the number of months that the container will be made available to the customer
- AmountPaid: The amount that the customer has already paid to use the container

3.1.1 Write code for a constructor method that will receive the customer ID, the container size and the storage period in months as parameter values. Assign these values to the respective attributes. Set AmountPaid attribute to the value of zero.

3.1.2 Write code for an accessor method called getAmountPaid for AmountPaid attribute.

3.1.3 Write code for a method called updateAmountPaid that will receive a value as a parameter and add the received value to the AmountPaid attribute.

3.1.4 Write code for a method called calculateCost that will use the Transaction object's attributes to calculate and return the cost of renting the container.

3.2 An incomplete unit (Question3_U) has been provided and contains code for both edit boxes to be accessible. A global Transaction variable called objTransaction has been declared.

Do the following to complete the code for QUESTION 3.2.1 to QUESTION 3.2.3 in the main form:

3.2.1 Button [3.2.1] - Instantiate object
Write code to do the following:
- Extract customer ID from edit box
- Extract first character of selected item in list box
- Extract number of months from spin edit
- Instantiate the objTransaction object:
- Disable the button btnQ3_2_1

3.2.2 Button [3.2.2 (a)] - Display amount due
Write code to do the following:
- Call the calculateCost method
- Display the amount due on pnlQ3_2_2

3.2.2 (b) Button [3.2.2 (b)] - Process payment
Write code to do the following:
- Display the amount due on pnlQ3_2_2

3.2.3 Button [3.2.3] - View details
The customer must be able to view the details of the Transaction object. Code to clear the rich edit box has been provided.

Complete the code as specified in QUESTION 3.1 for the Transaction_U object and QUESTION 3.2 for the Question3_U form class - NSC Information Technology - Question 3 - 2020 - Paper 1

Worked Solution & Example Answer:Complete the code as specified in QUESTION 3.1 for the Transaction_U object and QUESTION 3.2 for the Question3_U form class - NSC Information Technology - Question 3 - 2020 - Paper 1

Write code for a constructor method that will receive the customer ID, the container size and the storage period in months as parameter values.

Write code for an accessor method called getAmountPaid for AmountPaid attribute.

Write code for a method called updateAmountPaid that will receive a value as a parameter and add the received value to the AmountPaid attribute.

Write code for a method called calculateCost that will use the Transaction object's attributes to calculate and return the cost of renting the container.

Button [3.2.1] - Instantiate object

Button [3.2.2 (a)] - Display amount due

Button [3.2.2 (b)] - Process payment

Button [3.2.3] - View details

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