Can you take a look at the attached assignment? It is a programming project which involves writing a program. The information is attached.
Please make sure that you note and comment often to help walk through the code. The fourth
programming project involves writing a program to manage a student database. The interface to
the program should be a GUI that looks similar to the following:
A combo box should allow the user to select one of the four database actions shown. The
database should be implemented as a HashMap, with the ID field as the key and a student record
consisting of a name and major as the value. The operation should be performed when the user
clicks the Process Request button. If the user attempts to insert a key that is already in the
database an error message should be displayed using a JOptionPane message dialog box. If the
user attempts to delete, find or update a record that is not in the database, a message should also
be displayed. After each successful operation is completed a JOptionPane window should be
displayed confirming the success. In the case of a successful Find request, a window should pop
up containing the student's ID, name, major and current GPA. When the user selects the Update
request, the following JOptionPane windows should be displayed to gather information about a
course that has just been completed:
This program must consist of two classes. The first class should define the GUI and handle the
database interactions. It should be hand-coded and not generated by a GUI generator. The second
class named Student, should define the student record. It must have instance variables for the
student name, major and two variables that are used to compute the GPA. A variable that
contains the total number of credits completed and a second variable that contains the total
quality points, which are the numeric value of the grade received in a course times the number of
credit hours. It should not contain the student ID. The class should have the following three
1. A constructor that is used when new student records are created. It should accept the
name and major as parameters and initialize the fields that are used to compute the GPA
2. The second method courseCompleted should accept the course grade and credit hours
and update the variables used to compute the GPA. It will be called when an Update
request is made.
3. The third method should override toString and return a labeled string containing the
student name, major and GPA.
Be sure that all instance and class variables are declared as private. Also any exceptions thrown
by nonnumeric inputs should be properly handled. Finally when a student has not yet completed
any course, the GPA should be displayed as 4.0.
This question was answered on: Dec 18, 2020
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