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(See Syllabus “Due Dates for Assignments & Exams” for due dates.)
i L A B O V E R V I E W
Scenario and Summary
The objective of the lab is to take the UML Class diagram and enhance last week’s Employee class by making the following changes:
1. Create a static variable called numEmployees that holds an int and initialize it to zero. This will allow us to count all the Employee objects created in the main class.
2. Increment numEmployees in all of the constructors
3. Add overloaded versions of setDependents and setAnnualSalary that accept strings. This way, we will have two “set” methods for both dependents and annual salary; one that accepts a string, and one that accepts its default data type.
Due this week:
• Capture the Console output window and paste it into a Word document.
• Zip the project folder files.
• Put the zip file and screen shots (Word document that contains programming code and screen shots of program output) in the Dropbox.
i L A B S T E P S
STEP 1: Understand the UML Diagram
- static numEmployees: int = 0
• The following behaviors have been added:
+ static getNumEmployees( ) : int
+ setDependents(in dep : String) : void
+ setAnnualSalary(in sal : String) : void
STEP 2: Create the Project
You will want to use the Week 2 project as the starting point for the lab. To do this, you will want to create a new project by following these steps:
1. Open the same workspace you created for the Week 2 project.
2. Create a new project named “CIS247B_WK3_Lab_LASTNAME”. An empty project will then be created.
3. Copy your main class and employee class files from Week 2 and paste them into the Week 3 project.
4. Before you move on to the next step, build and execute the Week 3 project.
For each week’s assignments, you will follow these steps create a new project that reuses the program from the previous week.
STEP 3: Modify the Employee
Using the UML Diagrams from Step 1, code the changes to the Employee class.
a. Create a static numEmployees variable and initialize it to zero.
b. Increment numEmployees by 1 in each of the constructors.
c. Create an overloaded setDependents method and, this time, make the parameter a string.
d. Create an overloaded setAnnualSalary method and, this time, make the parameter a string.
Remember that you will have to convert the string in the above two “set” methods to the data type of the attribute.
e. Make the getNumEmployees a static method. (This way, you can call it with the class name instead of an object name.)
Be sure you follow proper commenting and programming styles (indentation, line spacing, etc.).
STEP 4: Modify the Main Method
In the Main class, create code statements that perform the following operations. Be sure you follow proper commenting and programming styles (header, indentation, line spacing, etc.). Note that several of the steps below were accomplished in last week’s assignment. New steps are in bold.
1. Create an Employee object using the default constructor.
2. Prompt for and then set the first name, last name, and gender. Consider using your getInput method from Week 1 to obtain data from the user for this step as well as Step 3.
3. Prompt for and then set dependents and annual salary using the new overloaded setters.
4. Using your code from Week 1, display a divider that contains the string “Employee Information”.
5. Display the Employee Information.
6. Display the number of employees created using getNumEmployees. Remember to access getNumEmployees using the class name, not the Employee object.
7. Create a second Employee object using the multi-arg constructor, setting each of the attributes with the following values: “Mary”, “Noia”, ‘F’, 5, 24000.0
8. Using your code from Week 1, display a divider that contains the string “Employee Information”.
9. Display the employee information for the second Employee object.
10. Display the number of employees created using getNumEmployees. Remember to access getNumEmployees using the class name, not the Employee object.
STEP 5: Compile and Test
When done, compile and run your code. Debug any errors until your code is error-free.
Check your output to ensure that you have the desired output, modify your code as necessary, and rebuild.
Your output should resemble the following:
STEP 6: Submit Deliverables
• Capture the output window and paste it into a Word document.
• Put the zip file and screen shots (Word document) in the Dropbox.
Submit your lab to the Dropbox located on the silver tab at the top of this page. For instructions on how to use the Dropbox, read these Step-by-Step Instructions or watch this Dropbox Tutorial.
See Syllabus “Due Dates for Assignments & Exams” for due date information.
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