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Project 4

This 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.

1. The first class should define the GUI and handle the database interactions.

2. 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:

a. 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.

b. 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.

c. The third method should override toString and return a labeled string containing the student name, major and GPA.

Finally when a student has not yet completed any course, the GPA should be displayed as 4.0.

The google recommended Java style guide, provided as link in the week 2 content, should be used to format and document your code. Specifically, the following style guide attributes should be addressed:

 Header comments include filename, author, date and brief purpose of the program.

 In-line comments used to describe major functionality of the code.

 Meaningful variable names and prompts applied.

 Class names are written in UpperCamelCase.

 Variable names are written in lowerCamelCase.

 Constant names are in written in All Capitals.

 Braces use K&R style.

In addition the following design constraints should be followed:

 Declare all instance variables private

 Avoid the duplication of code

 Also any exceptions thrown by nonnumeric inputs should be properly handled

Test cases should be supplied in the form of table with columns indicating the input values, expected output, actual output and if the test case passed or failed. This table should contain 4 columns with appropriate labels and a row for each test case. Note that the actual output should be the actual results you receive when running your program and applying the input for the test record. Be sure to select enough different scenarios to completely test the program.

Note: All code should compile and run without issue.

Submission requirements

Deliverables include all Java files (.java) and a single word (or PDF) document. The Java files should be

named appropriately for your applications. The word (or PDF) document should include screen captures

showing the successful compiling and running of each of the test cases. Each screen capture should be

properly labeled clearly indicated what the screen capture represents. The test cases table should be

included in your word or PDF document and properly labeled as well.

Submit your files to the Project 4 assignment area no later than the due date listed in your LEO

classroom. You should include your name and P4 in your word (or PDF) file submitted (e.g.

firstnamelastnameP4.docx or firstnamelastnameP4.pdf).

Grading Rubric:

The following grading rubric will be used to determine your grade:

Attribute Meets Does not meet

GUI Class 40 points

Defines the GUI.

Provides a combo box to allow the user to select one of the four database actions including insert, update, delete and find.

The database is 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 is 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 is displayed using a JOptionPane message dialog box.

If the user attempts to delete, find or update a record that is

0 points

Does not defines the GUI.

Does not provide a combo box to allow the user to select one of the four database actions including insert, update, delete and find.

The database is not 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 is not 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 is not 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 is displayed.

After each successful operation is completed a JOptionPane window is displayed confirming the success.

In the case of a successful Find request, a window pops-up containing the student's ID, name, major and current GPA.

When the user selects the Update request, a JOptionPane windows is displayed to gather information about a course that has just been completed including the grade and number of credits.

not in the database, a message is not displayed.

After each successful operation is completed a JOptionPane window is not displayed confirming the success.

In the case of a successful Find request, a window does not pop-up containing the student's ID, name, major and current GPA.

When the user selects the Update request, a JOptionPane window is not be displayed to gather information about a course that has just been completed including the grade and number of credits.

Code does not Compile.

Student class 40 points

Defines the student record.

Contains instance variables for the student name, major and two variables that are used to compute the GPA.

Contains a variable representing the total number of credits completed

Contains a variable representing the total quality points, which are the numeric value of the grade received in a course times the number of credit hours.

The class should not should contain the student ID.

Contains a constructor that is used when new student records

0 points

Does not define the student record.

Does not contains instance variables for the student name, major and two variables that are used to compute the GPA.

Does not contain a variable representing the total number of credits completed

Does not contain a variable representing the total quality points, which are the numeric value of the grade received in a course times the number of credit hours.

The class contains the student ID.

are created. It should accept the name and major as parameters and initialize the fields that are used to compute the GPA to zero.

Contains a method courseCompleted that accepts the course grade and credit hours and update the variables used to compute the GPA.

courseComplete is called when an Update request is made.

Contains an overridden toString method that returns a labeled string containing the student name, major and GPA.

Calculates and displays a GPA of 4.0 for students who have not yet completed any course.

Does not contains 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.

Does not contains a method courseCompleted that accepts the course grade and credit hours and update the variables used to compute the GPA.

courseComplete is not called when an Update request is made.

Does not contains an overridden toString method that returns a labeled string containing the student name, major and GPA.

Does not calculate or display a GPA of 4.0 for students who have not yet completed any course.

Code does not Compile.

Test Cases 10 points

Test cases are supplied in the form of table with columns indicating the input values, expected output, actual output and if the test case passed or failed.

Enough scenarios selected to completely test the program.

Test cases were included in the supporting word or PDF documentation.

0 points

No test cases were provided.

Documentation and Style guide 10 points 0 points

Screen captures were provided and labeled for compiling your code, and running each of your test cases.

Header comments include filename, author, date and brief purpose of the program.

In-line comments used to describe major functionality of the code.

Meaningful variable names and prompts applied.

Class names are written in UpperCamelCase.

Variable names are written in lowerCamelCase.

Constant names are in written in All Capitals.

Braces use K&R style.

Declare all instance variables private.

Avoids the duplication of code.

Any exceptions thrown by nonnumeric inputs are properly handled.

No documentation included.

Java style guide was not used to prepare the Java code.

All instance variables not declared private.

Duplication of code was not avoided.

any exceptions thrown by nonnumeric inputs are not properly handled