Student: BCIS 3680 Assignment 2 Grade Sheet Points Grades Course Class (10.5) Instance variables and their getters and setters Variable declared with private access modifier Variable declared with required data types Setter and getter methods follow correct naming convention Setter method parameter list is as required Getter method retrieves variable values correctly Constructor Method header is correct Parameter list has the parameters as required Initializes variables as instructed 1.5 1.5 1 1.5 1.5 1 1.5 1 Registration Class (8.5) Instance variables Variable declared with private access modifier Variable declared with required data types Constructor Method header is correct Parameter list has the parameters as required Initializes variables as instructed toString() Returns a String Calls proper getter method in Student object to read student name Calls proper getter method in Course object to read course number Concatenates room number properly 1.5 1.5 1 1.5 1 0.5 0.5 0.5 0.5 Driver Class (3) main() method Create Student object properly Create Course object properly Create Registration object properly Generates correct output Calls toString() in the Registration object JOptionPane method displays dialog correctly 0.5 0.5 0.5 0.5 1 Other (3) Text files of source code, screenshot 3 Hard Coding Any hard coding (5 points deduction per occurrence) Total -5 25 - BCIS 3680 Enterprise Programming Instructor: Dr. Andy Wu Assignment 2 An advantage of object-oriented programming (OOP) over procedural languages is its ability to “emulate” real world entities as objects. An OOP program can then implement the business logic of the application by programmatically setting up the objects to interact in ways they would in reality. In this assignment, we will create a few objects and use them to emulate a simple activity – registering a student in a course to be offered at a particular location. To do this, we will instantiate a Student object using the class file I have already created and uploaded to Canvas as code sample. We will then create a Course class and a Registration class and instantiate one object each based on them. Finally, we will write a simple Driver class that ties everything together. In this and future assignments, we want to follow the encapsulation principle. When we create new instance variables in existing or new class files, we will declare them as private. However, you only need to write their related getter and setter methods when instructed to do so. Similarly, create constructors only when instructed. Bear in mind, though, when writing production programs, you’d want to flesh out a class fully by writing getter and setter methods for all instance variables and by building a set of overloaded constructors. 1. In your IDE, create a new project for Assignment 2. 2. In the project, create a package by the name your_lastname.your_firstname (replace with your real names). We will save all class source files in the folder for this package (i.e., your_project_folder\src\your_lastname\your firstname\). 3. Download the source code files of Student.java into the package folder (this is the version with only four instance variables – ID, name, gender, and GPA). Add/modify its package statement to make it part of the your_lastname.your_firstname package. 4. Create a Course class and make it part of the your_lastname.your_firstname package using a proper package statement. This class should contain three instance variables as follows: Variable courseNum courseTitle hours Data Type String String int Use Course number Course title Number of credit hours (a) Write getter and setter methods for courseNum and hours. For instance variables without these methods, some IDEs (e.g., NetBeans) may display a warning message; disregard the message. BCIS 3680 Enterprise Programming Assignment 1 p. 1 (b) Write a full initialization constructor that requires three parameters – one for each of three instance variables – and assigns each parameter to its respective instance variable. 5. Create a Registration class and make it part of the your_lastname.your_firstname package using a proper package statement. This class should contain three instance variables as follows: Variable student course room Data Type Student Course String Use A Student object for student enrolled in the course A Course object for the course in which the student is enrolled Room where course is offered The first two instance variables are reference types (note the use of upper and lower cases in naming). (a) Write a full initialization constructor that requires three parameters – one for each of three instance variables, the first two being of the types Student and Course. Assigns each parameter to its respective instance variable. (b) Write a toString() method. It should return a String that contains the following text: is registered in at . The bracketed parts are place holders, which should be replaced by real values in run time, e.g., Anthony Castle is registered in BCIS3680 at BLB155. For an example of toString()method, see the Building.java code sample. In that example, the method reads instance variables within the class. In the case of Registration, the student name and course number aren’t instance variables. However, it does contain a Student object and a Course object as instance variables. You can assess student name and course number by calling the proper getter methods in those objects. 6. Now, it’s time to piece everything together. Create a Driver class. In this class, create the main() method, which does the following: (a) Create a Student object. Call the full-initialization constructor by passing four arguments: student ID, name, gender, and GPA. (b) Create a Course object. Call the full-initialization constructor you built in Step 4 by passing three arguments: course number, course title, and number of credit hours. (c) Create a Registration object. Call the full-initialization constructor you built in Step 5 by passing three arguments: the Student object you created in (a), the Course object you created in (b), and a string containing the room number. (d) Call the toString() method in the Registration object you created in (c). Call the JOptionPane.showMessageDialog() method to display the return value of toString(). For example: BCIS 3680 Enterprise Programming Assignment 1 p. 2 7. Take a screenshot of the dialog box. Do NOT use your cell phone or camera to take it. Doing so will cause point deduction. Instead, use the Snipping Tool in Windows to take the screenshot. 8. In Notepad++, create a text file Course.txt. Do NOT save it with .java extension. Make it a pure text file with the .txt file extension. 9. In your IDE, copy the entire content of the finalized version of your Course.java. Paste it into Course.txt and save. Note that you will want to update this text file if you make changes in Course.java later, as you may be graded based on this file. 10. Repeat Steps 8 and 9 for Registration.java and Driver.java to create Registration.txt and Driver.txt. 11. Zip the entire project folder into a compressed file by the name 3680-HW2-YourLastNameYourFirstName with the .zip, .rar, or .7z file extension. Do NOT include the three text files you created in Steps 8 through 10 in the zip file. Submission Due Date: 11:59 PM on Saturday, September 26, 2020 Submission Requirements:  No hard copy is required.  Log into Canvas.  Locate the submission link for Assignment 2.  Attach the following files:  The compressed file containing your entire project folder.  Course.txt, Registration.txt and Driver.txt (outside of the zip file).  Screenshot file showing the result of code execution.  Failure to comply with these requirements will cause point deduction. BCIS 3680 Enterprise Programming Assignment 1 p. 3
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