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Can you take a look at the attached assignment?   It is a programming project which involves writing a program. The information is attached. 


Project 4

 


 

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

 

methods:

 

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

 

to zero.

 

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.

 


 

 


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