Assignment 1
Due date: Week 6 Friday (25-Aug-2017) 11:45 PM AEST Weighting: 20%
Assignment task
Write a java console application that calculates and displays the bank interest for N bank accounts. 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 S334261 then N should be equal to 6 and you can declare it as final int N=6). The interest is based on total amount in account as shown below in Table 1.
Table 1. Amount and Interest
Amount Interest
$0 - $1000 0% (no interest)
$1001 - $5000 2.5%
$5001- $10000 5%
Over $10000 8% (high interest)
The application should ask the user to enter the amount for each account (total N accounts) and calculate the interest. The application should display the interest for each bank account as shown in the example below. At the end of the Nth account’s interest, the details such as total interest, lowest interest, highest interest, average interest and number of accounts with no interest should be displayed. The total interest is calculated by adding the interest for all accounts. The lowest interest is calculated by finding the lowest value from interests for N accounts. The highest interest is calculated by finding the highest value from interests for N accounts. The average interest is calculated by dividing the total interest with the total number of accounts. The number of accounts with no interest is calculated by finding all accounts with zero interest.
Example for N=4
Enter the amount for account number 1: 500 The interest for account number 1 is $0
Enter the amount for account number 2: 2000
The interest for account number 2 is $50
Enter the amount for account number 3: 10000
The interest for account number 3 is $500
Enter the amount for account number 4: 12000 The interest for account number 4 is $960
--------------------------------------------------Interest Details----------------------------------------------------- Total Interest: $1510 Lowest Interest: $0
Highest Interest: $960
Average Interest: $377.5
Number of accounts with no interest: 1
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Your application is to follow the same format for input and output as in the example above, but with customised welcome and exit messages.
The application is to use the following classes.
public class Account
{
public Account()
{
// constructor
}
public double interest(int amount)
{
// code to calculate interest goes here
} public int interestType(double interest)
{
// code to determine accounts with no interest goes here
}
}
public class AccountTest
{
public static void main(String[] args)
{
// local variable declarations go here
// display welcome message
// loop to input amount, calculate and display interest, calculate summary values
// generate and display summary
// display exit message
}
}
Submission
You must submit the following three files using the Moodle online submission system.
• Account.java
• AccountTest.java
• Report.docx (this file contains a brief report that includes student name, student ID number, course name, course code and test results (screenshots/test cases with results to show that your application is working correctly))
Important Note
• You should start your assignment as early as possible. Your tutor will be checking your progress in weeks 4 and 5.
• You should not show your source code and report to any other student. You should not ask anyone to do your assignment. Please read CQU’s plagiarism guidelines.
Marking Criteria
Criteria
Marks
Allocated
1 Variables, constants and types
Declaring and using variables and constants /2
2 Objects and classes
Creating/declaring and using objects and classes /1
3 Loops
Using loops and conditions /1
4 If statements
Using if statements and conditions /1
5 Methods
Declaring and using methods /2
6 Inputs and Outputs
Reading input /1
Displaying results /1
7 Overall logic and program
Calculating quantities (0 mark if program doesn’t compile) /5
Spacing and indentation conventions /1
Naming conventions /1
Comments /1
8 Report
Test results (0 mark if program doesn’t compile) /2
Presentation(fonts, spaces, information, language) /1
Sub-Total /20
Penalties
Late submission : 5% (1 mark) / day or part of a day
Total /20