You will want to complete enough of L01 - Car lab to understand how to create classes, attributes, and methods before completing the UML portion of this lab. You can do the code portion first, though.
The project name of this exercise is Employee.
The purpose of this assignment is to give you some practice problem solving, writing your own classes, and running unit tests.
Implement a class Employee and test it in your Program**.java**. An employee has a name (a String) and a salary (a double). Your Employee class must follow the provided specification below:
A constructor with two explicit arguments:
public Employee(String employeeName, double currentSalary) - Constructor. The constructor will initialize instance variables of the same name as provided parameters. That is, it will assign the values from the parameters to the instance variables.
Method Declarations / Class Interface
**public String getName() - Returns the name of the employee from the instance variable employeeName
public double getSalary() - Returns the current salary. It gets this value from an instance variable named currentSalary
public void raiseSalary(double byPercent) - Gives the employee a raise according to the explicit argument byPercent. This method will modify the value of the currentSalary instance variable
Sample Usage (paste this inside your main() method of Program.Java):
Employee harry = new Employee("Harry", 10000);
harry.raiseSalary(10); // Harry gets a 10% raise.
double harrysSalary = harry.getSalary();We are going to do this exercise by writing the object that solves the problem first (in a source file called Employee.java) and then testing it using code we write into Program.java. Using the techniques shown on the web page titled "How to Start Every Project in this Class", create a new project and open it in VS Code. Then, create a source file called Employee.java by selecting the src/main/java/edu/sbcc/cs105 folder and selecting File >> New File from the menu (or use alternative methods of right clicking on the project name bar or clicking the +File button on the project bar). The file called Program.java has already been provided.
Open up the Employee.java file and replace the code with the code contained in the box below:
/**
* CS 105 Theory and Practice I
* CRN: [CHANGE THIS TO YOUR INFORMATION]
* Assignment: Employee
*
* Statement of code ownership: I hereby state that I have written all of this
* code and I have not copied this code from any other person or source.
*
* @author [CHANGE THIS TO YOUR INFORMATION]
*/
package edu.sbcc.cs105;
/**
* This class implements an emplyee which is a person with a name and a salary.
*
*/
public class Employee {
/**
* Constructor that creates a new Employee with an initial name and salary.
*
*/
public Employee(String employeeName, double currentSalary) {
// TODO: Initialize instance variables from constructor (ctor) parameters
}
// Accessors that are obvious and have no side effects don't have to have
// any documentation unless you are creating a library to be used by other
// people.
public String getName() {
// TODO: Return the name of the employee;
}
public double getSalary() {
// TODO: Return the current salary of the employee
}
/**
* Raise the salary by the amount specified by the explicit argument.
*
*/
public void raiseSalary(double byPercent) {
// TODO: Calculate the new salary by increasing it by the percent passed in as a method argument
}
}You'll notice that there is only a skelton of code. It current doesn't do anything. You will have to add instance variables and code to get this class defined properly. Read the comments (and the problem) to understand what the problem is and how you will solve it.
Don't forget to through the code and replace every instance of [CHANGE THIS TO YOUR INFORMATION] to the appropriate item. Be sure that the square brackets are included when you replace the text.
Next, using the same technique you used to update the Employee.java file, update the file called Program.java. This is where your test code will go. Replace the code in that file with the code in the grey box below:
/**
* CS 105 Theory and Practice I
* CRN: [CHANGE THIS TO YOUR INFORMATION]
* Assignment: Employee
*
* Statement of code ownership: I hereby state that I have written all of this
* code and I have not copied this code from any other person or source.
*
* @author [CHANGE THIS TO YOUR INFORMATION]
*/
package edu.sbcc.cs105;
/**
* This class provides first level testing the Employee object.
*
*/
public class Program {
/**
* Create an employee and test that the proper name has been created. Test
* the initial salary amount and then give the employee a raise. Then check
* to make sure the salary matches the raised salary.
*
*
* @param args
* command line values. Not used in this example.
*/
public static void main(String[] args) {
// TODO: Paste code in here from the sample usage section. Feel free to adjust things like the salary and percent raised
}
}Similar to the Employee.java file go through Program.java and change the [CHANGE THIS TO YOUR INFORMATION] text to the proper items. There are two items to be changed.
You will also notice that Program.java does not contain any code to test the Employee.java source code. Write some test routines based upon the problem description. There are a couple of lines of code you can use at a starting point.
Once you've written your code run the code by single clicking on Program.java in the package explorer and selecting Run->Run from the menu or using the keyboard shortcut. Examine the output. Does it do what you want? If not, how can you modify the code to do what you want?
Don't forget to run unit tests. The unit test is called TestEmployee.java
YOUR UNIT TESTS MUST PASS BEFORE SUBMITTING THE FILE OR YOU GET NOTHING (Reference to the original Charlie and the Chocolate Factory).
Similar to the , you will create a UML diagram for this project and include it in the project submission. The UML assignment package should be named A04 - Employee and the exported XMI file should be named the same as the Java project. If we used our fictional student, Inigo Montoya, the file would be named Montoya-In-Employee.xmi
Follow the standard instructions for submitting a Java assignment: How to Submit Assignments