Create a class named Purchase. Each Purchase contains an invoice number $($invoiceNumber$),$ amount of sale $($saleAmount$),$ and amount of sales tax $($tax$).$ Include set and get methods for the invoice number and sale amount. Within the set method for the sale amount, calculate the sales tax as $5$ percent of the sale amount. Also include a display method that displays a purchase's details.

Next, create an application called CreatePurchase that declares a Purchase object and prompts the user for purchase details. When you prompt for an invoice number, do not let the user proceed until a number between $1,000$ and $8,000$ inclusive has been entered. When you prompt for a sale amount, do not proceed until the user has entered a nonnegative value. After a valid Purchase object has been created, display the object's invoice number, sale amount, and sales tax.

An example of the code is shown below:

Enter invoice number $2385$

Enter sale amount $4081\mathrm{.}28$

Invoice #$2385$ Amount of sale: $$4081\mathrm{.}28$ Tax: $$204\mathrm{.}06400000000002$