Course information
Assignment 2
Due date: Week 11 Thursday (3 October XXXXXXXXXX:45 PM AEST
Weighting: 30%
Assignment task
Write a java console application that allows the user to read, validate, store, display, sort and search
data (name, age, taxable income, tax, tax group) for N taxpayers. N should be declared as a constant
and it should be equal to the largest digit of your student id number (e.g. if your ID number is
S XXXXXXXXXXthen N should be equal to 7 and you can declare it as final int N=7;). The name, age and
taxable income must be read from the keyboard and tax and tax group must be calculated using
Table 1.
Table 1. Income Tax and Tax Group for Taxable Income
Taxable Income Income Tax Tax Group
$0 – $18200 $0 Group 1
$18201– $37000 $0 plus 19c for each $1 over $18200 Group 2
$37001 - $87000 $3572 plus 32.5c for each $1 over $37000 Group 3
$87001 - $180000 $19822 plus 37c for each $1 over $87000 Group 4
$180001 and over $54097 plus 45c for each $1 over $180000 Group 5
The name, age, taxable income, tax and tax group must be stored in an A
ay or A
ayList (index 0
for taxpayer 1 and index N-1 for taxpayer N). The minimum and maximum ages which can be
stored are 18 and 64. The minimum and maximum taxable incomes which can be stored are $1 and
$ XXXXXXXXXXA validation for minimum and maximum values must be done during the reading of age
and taxable income.
Your application should display and execute a menu with the following options. A switch statement
must be used to execute the following menu options.
1. Read, validate and store data for N taxpayers
2. Calculate and store tax and tax group for all taxpayers
3. Display all taxpayers
4. Display the name and age of all taxpayers from tax group 1
5. Search a taxpayer by age
6. Sort and display taxpayers
7. Exit from the application
1. Read, validate and store data for N taxpayers
This option reads name, age and taxable income for N taxpayers from the keyboard and stores them
in an A
ay or A
ayList. If the age is less than 18 and greater than 64 then an appropriate message
should be displayed and the user should be asked to enter the age again. Similarly if the taxable
income is less than $1 and greater than $999000 then an appropriate message should be displayed
and the user should be asked to enter the taxable income again.
2. Calculate and store tax and group number for all taxpayers
This option calculates the tax and group number based on Table 1 for each taxpayer and then stores
tax and group number in A
ay or A
ayList.
3. Display all taxpayers
This option displays the data (name, age, taxable income, tax, group number) for all taxpayers.
4. Display the name and age of all taxpayers from tax group 1
This option displays the name and age of all taxpayers from tax group 1. If there is no taxpayer in
group 1 then it displays an appropriate message.
5. Search a taxpayer by age
This option asks user to enter the taxpayer’s age and searches for it. If the age is found then it
displays an appropriate message with taxpayer details (name, age, taxable income, tax, group
number). If age is not found then it displays an appropriate message “taxpayer with given age is not
found”. If there is more than one taxpayer with the given age then it displays all of them. A built-in
search algorithm is not allowed in this assignment.
6. Sort and display taxpayers
This option sorts (by name) all taxpayers stored in A
ay or A
ayList in descending order and
displays all sorted taxpayers (name, age, taxable income, tax, group number). You can use any
sorting algorithm. A built-in sort algorithm for sorting is not allowed in this assignment.
7. Exit from the application
The application should display an appropriate message with student name and then exit from the
application.
The application should work in a loop to enable the user to read, validate and store data for all
taxpayers, calculate and store tax and tax group for all taxpayers, display all taxpayers, display the
name and age of all taxpayers from tax group 1, search a taxpayer by age, sort and display taxpayers
and exit from the application
Program design
You may use any design that meets the specification. However, a good design will adhere to the
following guidelines:
be logically co
ect
be easy to read and maintain
be well-designed
use a UML activity diagram
use appropriate classes, methods and fields
Your design MUST use the classes as listed below.
public class Taxpayer
{
fields to store name, age, taxable income, tax, group number
elevant methods including set and get methods
}
public class TaxpayerTest
{
XXXXXXXXXXpublic static void main(String[] args)
{
menu options using switch statement
data reading, Taxpayer object creation, data storing in a
ay/a
ayList, etc.
}
other static methods
}
You may add/use methods, parameters, fields/variables, constants, etc. which you need to complete
the application.
Testing
Testing is important. You should test your application using many different types of test cases
efore you submit it for marking.
What to submit
You should submit online the following files.
Taxpayer.java (this file contains java code for class Taxpayer)
TaxpayerTest.java (this file contains java code for class TaxpayerTest).
Report.docx (this file contains a
ief report that includes student name, student ID, unit name,
unit code, UML activity diagram for menu option 2 (calculate and store tax and group number
for all taxpayers) and test results (screenshots for different test cases with results to show that
your application is co
ectly working)).
Warning: You must submit your own work and co
ect files. You should not take any help
from anyone and you should not show your code to anyone. If you have any problem, you
should talk to your tutor or lecturer or unit coordinator.
Assessment 2 marking criteria
Total Marks – 30
Marks
Allocated
1 Design, logic and testing – 14
Code readability – appropriate use of comments, indentation and
naming conventions
3
Declaring and using fields/variables and constants 2
Creating/declaring and using objects, methods and classes 3
Overall design and logic (structure, efficiency) 2
Validity of testing as evidenced by submitted test results 2
UML activity diagram for menu option 2 2
2 Compilation and execution - 14
XXXXXXXXXXif application doesn't run)
Welcome and exit messages 1
Input data validation and message 1
Read and store all taxpayers 1
Calculate and store tax and group number for all taxpayers 2
Display all taxpayers 1
Display the name and age of all taxpayers from tax group 1 2
Search for a taxpayer by age 2
Sort and display taxpayers 2
Overall program execution (user friendly, input/output and display) 2
3 Report – 2
Presentation (fonts, spaces, information, language) 2
4 Penalty
Penalty for submission of inco
ect files including names and
formats is 2 marks
Penalty for late submission is 5% mark / day or part of a day
Course information
Assignment 2
Due date: Week 11 Thursday (3 October XXXXXXXXXX:45 PM AEST
Weighting: 30%
Assignment task
Write a java console application that allows the user to read, validate, store, display, sort and search
data (name, age, taxable income, tax, tax group) for N taxpayers. N should be declared as a constant
and it should be equal to the largest digit of your student id number (e.g. if your ID number is
S XXXXXXXXXXthen N should be equal to 7 and you can declare it as final int N=7;). The name, age and
taxable income must be read from the keyboard and tax and tax group must be calculated using
Table 1.
Table 1. Income Tax and Tax Group for Taxable Income
Taxable Income Income Tax Tax Group
$0 – $18200 $0 Group 1
$18201– $37000 $0 plus 19c for each $1 over $18200 Group 2
$37001 - $87000 $3572 plus 32.5c for each $1 over $37000 Group 3
$87001 - $180000 $19822 plus 37c for each $1 over $87000 Group 4
$180001 and over $54097 plus 45c for each $1 over $180000 Group 5
The name, age, taxable income, tax and tax group must be stored in an A
ay or A
ayList (index 0
for taxpayer 1 and index N-1 for taxpayer N). The minimum and maximum ages which can be
stored are 18 and 64. The minimum and maximum taxable incomes which can be stored are $1 and
$ XXXXXXXXXXA validation for minimum and maximum values must be done during the reading of age
and taxable income.
Your application should display and execute a menu with the following options. A switch statement
must be used to execute the following menu options.
1. Read, validate and store data for N taxpayers
2. Calculate and store tax and tax group for all taxpayers
3. Display all taxpayers
4. Display the name and age of all taxpayers from tax group 1
5. Search a taxpayer by age
6. Sort and display taxpayers
7. Exit from the application
1. Read, validate and store data for N taxpayers
This option reads name, age and taxable income for N taxpayers from the keyboard and stores them
in an A
ay or A
ayList. If the age is less than 18 and greater than 64 then an appropriate message
should be displayed and the user should be asked to enter the age