Tax Management System of XYZ

Tax Management System of XYZ.

Task

Write
a Java program that will calculate tax for the employees of a company
called XYZ. The main menu of the tax calculation program is as
follows.

Welcome
to Tax Management System of XYZ

Please
select one of the following options:
1. Calculate tax
2.
Search tax
3. Exit 

When 1 is
selected then the program will calculate the tax of an employee based
on the annual income of the employee and tax rates on the income. The
tax rates on the income is stored in a file called taxrates.txt.
The program needs to read the taxrates.txt file
and store the information in proper data structure. If
the taxrates.txt file
does not exist in the directory of the source code then the program
should ask to provide the taxrates.txt file
as an input. The format of the taxrates.txt file
is as follows. 

Taxable
Income 		Tax
on Income
0
– $18,200 		0
$18,201
– $37,000 		19c
for each $1 over $18,200
$37,001
– $87,000 		$3,572
plus 32.5c for each $1 over $37,000
$87,001
– $180,000 		$19,822
plus 37c for each $1 over $87,000
$180,001
and over 		 $54,232
plus 45c for each $1 over $180,000

The
program will take user inputs on Employee ID (4-digit number) and the
annual income of the employee (floating-point number with two decimal
places). Based on the annual income of the employee the program will
then calculate the tax (using the information in taxrates.txt file)
of the employee. For  example, if the annual income of an
employee is $100000.00 then the tax of the employee=19822+(100000 –
87000)*0.37= 20303.00. 

After
calculating the tax of an employee the program will then write the
Employee Id, taxable income and tax into a file called taxreport.txt.
The format of the taxreport.txt file
is as follows.

Employee
ID 		Taxable
Income 		Tax
1111 100000.00 20303.00
2222 90000.00 19933.00

Once
the tax calculation is done for one employee then the program will
ask if XZY wants to calculate the tax for another employee, if yes
then the above process will continue again. The program will
calculate the tax for as many employees as XYZ wants. However, if XZY
does not want to calculate the tax for another employee then main
menu will be displayed.

When 2 is
selected then the program will search the tax for an employee using
the employee id in the taxreport.txt file.
However, if the taxreport.txt file
does not exist in the directory of the source code then the program
should ask to provide the taxreport.txt file
as an input.

If
the taxreport.txt file
contains the multiple tax for the same employee then the program will
get the latest tax amount of that employee. If the taxreport.txt file
does not contain the employee id then the program should give an
warning message that the taxreport.txt file
does not contain the tax of that employee.

Once
searching tax (based on employee id) is done for one employee then
the program will ask if XZY wants to search tax for another employee,
if yes then the above process will continue again. The program will
search tax for as many employees as XYZ wants. However, if XZY does
not want to search tax for another employee then main menu will be
displayed. 

When 3 is
selected then the program will exit.
 

File
read and write operations need to be done properly. You need to use
proper data structure. Input validation also needs to be done. 

Task

In
this part of your assignment you are required to produce a fully
functional GUI program in accordance with the specifications
mentioned below. The program will be used to determine and display
the final mark of students enrolled in the “Programming in Java 2”
subject. It will also have the capability to calculate and display
the average mark for all students entered into the system.

Part
1 Elements of the GUI :

  • An
    appropriate title appearing on top of the main frame of the GUI (eg.
    “Grade Processing Programming in Java 2”)

  • Six
    text fields with appropriate labels namely “Student ID”,
    “Student Name”, “Quiz Marks”, “Assignment 1 Marks”,
    “Assignment 2 Marks” and “Exam Marks” to take user inputs

  • Two
    buttons (“Student Marks” and “Average Marks”) used to
    trigger actions for calculations
  • A
    lower part (section) of the GUI will contain the Student Name,
    Student ID, Quiz marks, Assignment 1 marks, Assignment 2 marks,
    Exam, Results and Grade.
  • Please
    see the figure below to get an idea about the GUI

Part
2 Functionality:

  • For
    each student, user enters “Student ID”, “Student Name”,
    “Quiz”, “Assignment 1”, “Assignment 2”, and “Exam”
    marks. The mark on each assessment items has to be an integer
    between 0 and 100 (inclusive). Input validation needs to be done on
    each assessment mark to make sure that the mark on each assessment
    is in between 0 and 100.

  • User
    then presses the “Student Marks” button to calculate the final
    marks and grade for the student. The weights on Quiz, “Assignment
    1”, “Assignment 2”, and “Exam” are 5%, 20%, 25% and 50%,
    respectively.
  • Calculate
    Results: The results of a student should be calculated using the
    following formula:

Results
= (Quiz marks* 0.05) + (Assignment 1 marks * 0.20) + (Assignment 2
marks * 0.25) + (Exam  marks* 0.5)

  • Calculate
    Grade: 

HD:
Results>=85
DI: 75<=Results<85
CR:
65<=Results<75
PS: 50<=Results<65
FL:
75<=Results<50

  • The
    users of the program are allowed to enter marks for as many students
    as they want

  • The
    lower part of the GUI will contain the Student Name, ID, Quiz marks,
    Assignment 1 marks, Assignment 2 marks, Exam marks, Results and
    Grade of 10 recently entered students.
  • Input
    validation needs to be done
  • When
    a user clicks the “Average Marks” button then the average marks
    for all students entered will be displayed.

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Tax Management System of XYZ

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