Home CPSC 240

Lab 5: Student Class

Objective

Implement a class containing static methods.

Task

For this lab, you will write a class called "Student". It should have the following instance variables:

First name, a String.
Last name, a String.
ID number, an int.
GPA, a double.
Number of credits, an int.

It should also have one static class variable. Remember these are shared amongst all instances of a class:

The next available ID, an int. You should initialize this to 1000 where you declare it.

It should also have the following methods:

A static method called getNextId() which returns the next id currently available. It then increments this field. This way, each time the method is called, a new id is generated.
A constructor which takes the students name fields as parameters. The names should be set from the parameters. The credits and gpa should be set to 0. The id should be set to what getNextId returns.
A method called addCourse which takes the number of credits of the course (an int), and the grade the student got in the course (a String).

The method to add a course should factor the grade into their GPA. To do that, weight the student's current GPA by their old number of credits, and the grade from the new course by the number of credits. For example, imagine a student's current GPA is 3.2, and they have 60 credits. If they get an A- in a 3 credit course, then their new GPA is calculated as:

$\Large \frac{3.2 \times 60 + 3.7 \times 3}{60 + 3}$

The 3.7 comes from the number equivalent to an A-. You can get the list of these values from this page.

It should then add the courses credits into the student's total (as long as they did not fail). If the student has 60 credits and adds a 3 credit course, then they now have 63.
A method called report() that prints a report on the student. This should take no parameters and return void. The method to print a report should print all of the student's details to the screen in a readable way. The format is up to you.
A method called canGraduate() which determines if the student can graduate. To do this, it should check that the student has at least 120 credits and has a GPA of at least 2.0. If so, they can graduate; if not, not.

Testing

You can use the StudentMain.java file to test your program.

Here is an example run:

Alice, Johnson	1000	0.00	0
Bob, Williams	1001	0.00	0
Claire, Smith	1002	0.00	0

Alice, Johnson	1000	2.03	107
Bob, Williams	1001	1.96	120
Claire, Smith	1002	2.46	130

Alice CAN'T graduate.
Bob CAN'T graduate.
Claire can graduate.

Submitting

When you are done, please submit the Java code under the assignment in Canvas.

You only need to submit the Student.java file, not the Main.java one.

Solution

A solution to this lab can be found in Student.java.