[Solved] SOLVED:A Simple Cash Register Solution

Before Starting the Project Read the following: Chapter 2 Variables and Chapter 5 Branching Read section 1.7 (Basic Input) and other related sections in Chapter 2 on reading user input using the Scanner class before completing the challenge requirements Read this entire project description before startingObjectivesAfter completing this project you should be able to: write, compile and run a simple Java class write expressions using variables write methods to meet specific requirements explain the differences between local variables, instance variables and method parameters write conditional statements with boolean expressionsBasic RequirementsCreate a class, called CashRegister, which simulates the functionality of a simple cash register at a local convenience store. You can do simple things like scan prices, make payments, and report daily sales. Simple text messages are displayed on the screen. Provide appropriate names and data types for each of the private instance variables: a double for the current amount due that changes as the teller scans prices, a double for the total daily sales that increases throughout the day, a String for the store name, and a final double for the sales tax (0.06). public CashRegister (String name) – constructor initializes the instance variables to zero and sets the store name to the provided parameter. Displays a welcome message that includes the store name. ( 5 pts) public double getTotalSales ( ) – return the total sales for the day. (5 pts) public double getAmountDue ( ) – return the amount due from the current customer. (5 pts) public void scanPrice (double price) – add the given price to the current amount due. Ignore, for now, if the price is negative. Notice that no Scanner should be used inside this method, the price is entered as parameter. Display the price. (5 pts) public void completeSale ( ) – After the cashier has scanned the last item, calculate the sales tax and add to the current amount due. Add the amount of this sale to the total sales for the day. Display the sales tax and total amount due. (10 pts) public void cancelSale ( ) – set the current amount due to zero and display an appropriate message. (5 pts)CIS 162 Project 2 – Summer 2015 Page 2 of 6 public void makePayment (double amount) – reduce the amount due by the amount paid and display the amount of change due to the customer. Reset amount due to zero. Ignore, for now, if the customer does not pay enough. (10 pts) public void showSalesReport ( ) – display the store name and total sales for the day (5 pts) public static void main ( ) – as defined below in the software testing section (10 pts) Create a new instance variable of type NumberFormat (will be explained during lecture) and instantiate it in the constructor. Use this object throughout all methods to properly display currency amount (10 pts)NumberFormatInclude this package at the beginning of your classimport java.text.NumberFormat;To declare fmt as a NumberFormat objectprivate static NumberFormat fmt;To instantiate fmtfmt = NumberFormat.getCurrencyInstance();Example of printing amount as currencydouble amount = 5.6;System.out.println(fmt.format(amount));Challenge RequirementsThe following should only be attempted after all basic requirements have been completed. Modify the scanPrice (double price) method to update the amount due only if the price, entered as parameter, is above zero. Otherwise, print an error message stating there was a scanning error. (5 pts) public void clearAllSales ( ) – Prompt the cashier if she really wants to clear all sales. Read the response from the keyboard. If she types “y”, set the total daily sales to zero. Otherwise, make no changes. Display an appropriate message. (5 pts) Modify the makePayment () to allow for several messages. 1) If the payment is negative, 2) if the payment is not enough, 3) if the payment is too much and 4) if the payment is exact. Each message should be unique and only one is displayed. (10 pts)Software TestingSoftware developers must plan from the beginning that their solution is correct. BlueJ allows you to instantiate objects and invoke individual methods. You can carefully check each method and compare actual results with expected results. However, this gets tedious and cannot be automated.CIS 162 Project 2 – Summer 2015 Page 3 of 6JUnit TestingJUnit is a Java library that provides a framework to automate software testing. A JUnit test file CashTest.java has been provided by your instructor. Use the following instructions to run JUnit Testing1. Name your class CashRegister. Exact spelling is required. Using a different name (cashRegister, Cashregister, CashReg, …) will fail the test2. Complete both the basic and challenge requirements describe above3. Download CashTest.java to the same folder as your CashRegister.java4. Restart Bluej (if CashTest does not show up on your BlueJ window). BlueJ should recognize CashTest as a “< 5. If the “Run Tests” button is not visible, go to Bluej Preferences. Under the “Miscellaneous” tab check the “Show unit testing tools”CIS 162 Project 2 – Summer 2015 Page 4 of 66. On the BlueJ window, click the “Run Tests” button. If your class passes all the test cases, the test results window will show a green horizontal bar and zero failures. Otherwise, you will see a red horizontal bar and the number of failures. Click on a test result to show a longer description of the failure.7. Run the main method() of CashTest.java. The test results will be printed on BlueJ terminal window.Testing From Your Own main() methodAnother approach is to write a main method that calls all the other methods in a carefully designed sequence.CIS 162 Project 2 – Summer 2015 Page 5 of 6For this project, write a main method that instantiates at least two cash registers for different stores and invokes each of the methods with a variety of parameter values to test each method. It takes careful consideration to anticipate and test every possibility.A brief and incomplete example is provided below. Your method will be longer and instantiate two cash registers for different stores.public static void main(String [] args){CashRegister uMart = new CashRegister(“uMart”);uMart.scanPrice(1.50);uMart.scanPrice(3.00);uMart.completeSale();uMart.makePayment(5.00);}The sample main method will create the following output to the terminal window:Welcome to uMart!Price: $1.50Price: $3.00Sales Tax: $0.27Amount Due: $4.77Payment: $5.00Thank You! Your change is $0.23Testing Using Instructor Provided Test CasesSample MessagesThe following messages are provided as examples. Your messages can be more creative as long as they convey the correct information.Greeting message when object instantiatedWelcome to Scott’s Corner Store!After cashier scans an itemPrice: $24.99If cashier scans a negative amountScanning error. Please try again.After cashier completes the saleSales Tax: $1.20Amount Due: $24.99If customer pays a negative amountWe do not accept credit cardsIf the current sale is cancelledSale cancelledIf customer pays exact amountPayment: $5.00Thank You. Have a nice day!If customer pays too muchPayment: $5.00Thank You. Your change is $1.45If customer pays too littlePayment: $5.00You still owe $1.45If all sales are clearedAre you sure you want to cancel all sales? (y/n)All sales cancelledDaily Sales ReportScott’s Corner StoreTotal Daily Sales: $1,577.15CIS 162 Project 2 – Summer 2015 Page 6 of 6Grading CriteriaThere is a 50% penalty on programming projects if your solution does not compile.• Stapled cover page with your name and signed pledge. (-5 pts if missing)• Project requirements as specified above. (90 pts)• Elegant source code that follows the GVSU Java Style Guide. (10 pts)Late PolicyProjects are due at the START of the class period. However, you are encouraged to complete a project even if you must turn it in late.• The first 24 hours (-20 pts)• Each subsequent weekday is an additional -10 pts• Weekends and university holidays are free days.Turn InA professional document is stapled with an attractive cover page. Do not expect the lab to have a working stapler!• Cover page – Provide a cover page that includes your name, a title, and an appropriate picture or clip art for the project• Signed Pledge – The cover page must include the following signed pledge: “I pledge that this work is entirely mine, and mine alone (except for any code provided by my instructor).” You are responsible for understanding and adhering to the School of CIS Guidelines for Academic Honesty.• Time Card – The cover page must also include a brief statement of how much time you spent on the project. For example, “I spent 7 hours on this project from September 22-27 reading the book, designing a solution, writing code, fixing errors and putting together the printed document.”• Sample Output – a printout of the Terminal window after running the main method that shows a variety of the printed messages. You can cut and paste into the Word document that contains your cover page.• Source code – a printout of your elegant source code printed from BlueJ with line numbers (with your name).