This assignment requires you to create a Java application that will be used to inventory mowers in a mower store. In addition to the classes that store the mower data, you will create a GUI to manage the inventory.
You will submit this project using GitHub pull requests. You must create a GitHub pull request for each level to receive credit. You should request your assigned reviewer on your pull request. Review the following resource on git and GitHub for major programs before you start work:
You must complete all work on a separate branch. You CAN NOT push code to the master branch. Review the above git and GitHub resources to learn about branching.
You must add your assigned TA as a reviewer for your pull requests. You can find your assigned reviewer here. Reviewer assignments have changed since MP1 so please check this document again.
You are required to implement the following classes at a minimum. You may add other classes (and methods) if you need them.
Each ArrayList should have five associated methods to perform: getNum, add, remove, get and set. So if you have an ArrayList named widgets that stored items of type Widget, then the associated UML behaviors would be:
+getNumWidgets() : int //Return the number of items in the ArrayList widgets.
+getWidget(index:int) : Widget //get the Widget at location index in ArrayList widgets
+setWidget(index:int, item:Widget):void //store item at location index in the ArrayList widgets.
+addWidget(item:Widget):void //Append the Widget to the ArrayList.
+removeWidget( index:int ) : Widget //remove and return the Widget at location index
The toString() method for each concrete subclass of Mower must include a letter designating the subtype. "L" for LawnTractor, "C" for CommercialMower, "G" for GasPoweredMower and "P" for PushReelMower. This should be the first line after the serialNumber as shown in the input file format below.
Properties should be returned in the order they are listed in the UML diagram, from superclass to subclass.
The name of the input file will be supplied using command-line arguments. If no command-line argument is supplied, then your program should prompt the user for the input file using the JFileChooser class. Here is the format of the input file:
storeName
mower0Manufacturer
mower0Year
mower0SerialNumber
mower0SubClassType
mower0SubClassProperties
mower1Manufacturer
mower1Year
mower1SerialNumber
mower1SubClassType
mower1SubClassProperties
...
mowerNManufacturer
mowerNYear
mowerNSerialNumber
mowerNSubClassType
mowerNSubClassProperties
The format for the output file should be identical to that of the input file. In other words, after writing your output file, you should be able to read it back in as an input file. The toString() methods of your classes are designed to make file output simple.
If you would like to add a GUI to your application, look for the GUI addendum. It will be posted later in the same folder as this assignment. You should not attempt this portion of the assignment if you have not completed the other classes.
If your project does not compile, it receives a grade of zero. If you do not document your program according to the documentation guidelines, the graders have been instructed to deduct up to 25%.
Implement all the classes except the MowerWareHouse class.
Implement the MowerWareHouse class except the readMowerData() and saveMowerData() methods. Use the main() method to create one of each type of concrete class and add them to the ArrayList. Output the contents of the MowerWareHouse object to a JOptionPane using the toString() method of the MowerWareHouse class.
Modify your main so that it uses command-line arguments to provide the input file name. Add the logic to obtain the input file name from a JFileChooser if no command-line argument is provided. Implement the readMowerData() and saveMowerData() methods. To prove your code works, read the input file and add additional mowers by creating objects in the main method and adding them to the MowerWareHouse object. Save the updated MowerWareHouse object using the saveMowerData() method.
###Level 4 (15 points) Implement the GUI. See the GUI addendum for details