When processing each room, the application needs to store some of the information

displayed in the report to be able to calculate the discount when applicable. The

information that is required to be stored is:

The room surface area,

The cost for purchasing the paint, and

The cost of labor for the paint job

After processing the details for each room and storing the relevant information the

application will print a summary report addressing the customer by their name including

the details for all the rooms and total cost for the painting job over all rooms.

The application will then check if the customer is entitled to a discount and accordingly

calculate the discount and print the total cost after the discount.

Before the application quits, it will issue a customized "thank you" message to the

customer. The application needs to validate all numeric values input by customer and in

case of wrong input value or an input exception the application must give an error

message and ask the customer to input the values again.

Implementation Hint:

For this assignment you are free to design your code according to your preferences.

However, you need to consider the following guidelines:

The use of parallel arrays when applicable.

The use of modular design and methods when applicable

The use of final keyword when appropriate.

The use of String.format$()$ when displaying $2$ decimal digits after the decimal

point.

All user input must be validated.