Calculating Home Deposit Savings

Program Requirements

Display Welcome message

DO

PRINT “1. Enter House Prices”

PRINT “2. Enter Avocado on Toast Price”

PRINT “3. Deposit Calculator”

PRINT “4. Exit System”

READ menuChoice

IF menuChoice==1 THEN

Read “Cheapest Price”, dblCheapest

Read “Chosen Price”, dblSelected

Read “Median Price”, dblMedian

ELSE IF menuChoice==2 THEN

READ “Avocados on Toast Price : “, avocadoPrice

ELSE IF menuChoice==3 THEN

PRINT “DEPOSIT SAVING CALCULATOR”

PRINT “You will need to NOT buy”

PRINT “dblCheapest*discount/avocadoPrice+” smashed avocados on toast to save $”+dblCheapest*discount+” deposit for the cheapest house”

PRINT “dblSelected*discount/avocadoPrice+” smashed avocados on toast to save $”+ dblSelected*discount+” deposit for the chosen house”

PRINT “dblMedian*discount/avocadoPrice+” smashed avocados on toast to save $”+ dblMedian*discount+” deposit at the median price”

READ “How many times a week do you purchase avocado on toast?”,numAcocadoPerWeek

ADD Current date to Number of Week

PRINT “If you stop buying avocado on toast starting from today and save the moneny instead,nyour deposit for a $”, futureDate

END IF

WHILE (menuChoice!=4)

PRINT “The House Deposit Calculator is now exiting

Section 2: Program Development

import java.text.DecimalFormat;

import java.text.NumberFormat;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.GregorianCalendar;

import java.util.Scanner;

public class Assign1

{

public static Scanner readData=new Scanner(System.in);

public static void printStar(int count) //print the star which depends upon the count value

{

int i;

for(i=1;i<=count;i++)

System.out.print(“*”);

System.out.println();

}

public static int readChoice()

int inData=-1;

do 

try

System.out.println(“Please select an option from the menu :” );

System.out.println(“1. Enter House Pricesn2. Enter Avocado on Toast Pricen3. Deposit Calculatorn4. Exit System”);

inData=Integer.parseInt(readData.nextLine()); //read the menu choice

if(inData<0 || inData>4) //validate the menu choice is between 1 and 4

System.out.println(“nPlease enter the input between 1 and 4n”); //if the condition is false, print the error message

else

break;

catch(NumberFormatException nfe) //if any number format has exception, it displays an error message

System.out.println(“nInvalid input :  please retryn”);

catch(Exception e)

System.out.println(“nInvalid input :  please retryn”);

}while(inData>0 && inData<=4);

return inData;

public static double readPositive(String str)

double data=0;

do

try

System.out.println(str);

data=Double.parseDouble(readData.nextLine()); //read the value

if(data<=0) //validate the input data is less than or equal to zero  

System.out.println(“nValue should be greater than 0n”); //if the condition is true, print an error message

else

break;

catch(NumberFormatException nfe)

System.out.println(“nInvalid input :  please retryn”);

catch(Exception e)

System.out.println(“nInvalid input :  please retryn”);

}while(true);

return data;

public static void main(String[] args)

int menuChoice=-1,flag=0,numAcocadoPerWeek=0,futureNumWeek;

double dblCheapest=0,dblSelected=0,dblMedian=0,avocadoPrice=0,discount=20.0/100;

GregorianCalendar currentDate=new GregorianCalendar();

SimpleDateFormat dFormat = new SimpleDateFormat(“dd/mm/yyyy”); //date formatting object

NumberFormat nFormat = new DecimalFormat(“#0.00”); //decimal number format

printStar(86);

System.out.println(“ntttSAVE A HOUSE DEPOSIT CALCULATORn”); //display the welcome message

System.out.println(“Developed by Mohammad Mozammel Hoque, Student ID 30332712 for ITECH1000 Sem 2 2017n”);

printStar(86);

do

menuChoice=readChoice(); //read menu choice

if(menuChoice==1)

System.out.println(“nHouse Details :”);

dblCheapest=readPositive(“Enter asking price for cheapest house listing : $”); //read the cheapest price of house

dblSelected=readPositive(“nEnter asking price for your chosen house : $”); //read the chosen price of house

if(dblCheapest<dblSelected) //check the cheapest is less than the selected value

dblMedian=readPositive(“nEnter the median value for this area : $”); //if yes, read the median value

if(dblCheapest<dblMedian) //validate the cheapest is less than median, set 1 to flat

flag=1;

else

dblCheapest=0.0; //if the cheapest is greater than median, set cheapest, chosen and median to zero

dblSelected=0.0;

dblMedian=0.0;

flag=0;

System.out.println(“nCheapest price should be less than median housen”);

else

System.out.println(“nCheapest price should be less than chosen housen”); //if the selected value is less than cheapest, display an error message

else if(menuChoice==2) //if the choice is 2,

if(flag==1) //if flag is 1 (it means that house data are entered successfully)

avocadoPrice=readPositive(“Enter the price (in dollars) of avocado on toast from a local cafe or restaurant: $”); //read the avocado on toast price

flag=2;

else

System.out.println(“nYou need to enter all the house prices firstn” ); //if house data are not entered, it displays an error message

else if(menuChoice==3)

if(flag==2)

System.out.println(“DEPOSIT SAVING CALCULATOR”);

printStar(95);

System.out.println(“You will need to NOT buy”); //display the deposit saving calculating information

System.out.println(nFormat.format(dblCheapest*discount/avocadoPrice)+” smashed avocados on toast to save $”+nFormat.format(dblCheapest*discount)+” deposit for the cheapest house”);

System.out.println(nFormat.format(dblSelected*discount/avocadoPrice)+” smashed avocados on toast to save $”+nFormat.format(dblSelected*discount)+” deposit for your chosen house”);

System.out.println(nFormat.format(dblMedian*discount/avocadoPrice)+” smashed avocados on toast to save $”+nFormat.format(dblMedian*discount)+” deposit for a house at the median price”);

printStar(95);

numAcocadoPerWeek=(int) readPositive(“How many times a week do you purchase avocado on toast?”);

futureNumWeek=(int) (dblSelected /(numAcocadoPerWeek * 4 * 20)); //read the number of toast per week purchased

currentDate.add(Calendar.WEEK_OF_MONTH, futureNumWeek); //add current date to number of avocado per week

System.out.println(“nIf you stop buying avocado on toast starting from today and save the moneny instead,nyour deposit for a $”+dblSelected+” house will be saved in the week of “+dFormat.format(currentDate.getTime()));

printStar(100);

else

System.out.println(“nYou need to enter all house and avocado prices firstn”);

}while(menuChoice!=4);

System.out.println(“nThe House Deposit Calculator is now exiting”); //print the exit message

Section 3: Testing

Document your testing here.  Copy your test cases here from Section 1 as you need them.  You can use screen captures to show the Actual Results – if using Microsoft Windows, the Snipping Tool is handy for this.

Note: If you find that a test case fails when you try it (i.e. the program does not return the expected results), make sure you include that in your results too.  This is a GOOD thing and the reason for testing in the first place – even professional programmers make mistakes while coding and we need to test to find these issues.  After you find an error, find the issue, try to fix it, and then test the code again.  Show your updated results in the Actual Results section as well.  You can include comments with this to explain what has happened.