// the high interest rate
DISPLAY "Error message, low interest rate is more than the high interest
rate"
DISPLAY "Enter the low interest rate:"
Enter the lowIntRate
DISPLAY "Enter the high interest rate:"
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Enter the highIntRate
ENDDO
// Ended of checking the interest
DISPLAY "
Interest Rate
" + "
Monthly Payment
" + "
Total Payment
"
DOWHILE(lowIntRate<=highIntRate)
RECEIVE Payment = calculateInt(loanAmount, years, lowIntRate)
RECEIVE TotalPayment = (Payment * 12) * years
DISPLAY lowIntRate, Payment, TotalPayment
lowIntRate = lowIntRate + 0.25
13)
DISPLAY(“Do you want to continue? Y or N”)
14)
Enter the solution
15)
IF (solution==’Y’)
Choice=True
ELSE
Choice=False
ENDIF
ENDIF
ENDWHILE
// Ended of the loop choice statement
DISPLAY
“You have ended the program”
END
// Ended of main
16)
Acceptation_input_ofInt()
// Acceptation of input is integer for function
WHILEDO(NOT IntInput)
Display “Please enter the numbers:”
Receive IntInput
ENDDO
RETURN IntInput
END
// Ended of function checking the integer
17)
Acceptation_input_ofDouble()
// Acceptation of input is double for
function
WHILEDO(NOT DoubleInput)
Display “Please enter the numbers:”
Receive DoubleInput
ENDDO
RETURN DoubleInput
END
// Ended of function checking the double
18)
calculateInt (loanAmount, years, interestRate)
RECEIVE monthlyRate = interestRate / 1200
RECEIVE monthPayment = (loanAmount * monthlyRate) / (1 - (1 /
(Math.pow(1 + monthlyRate, years * 12))))
RETURN monthPayment
END
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Flow chart diagram of the program:
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By accepting of check the program, which had been done. The program is unable to
accept the input for zero and keep repeating until the user to enter the correct
input.
7) Source program listings:
package loanpayment;
import java.util.Scanner;
public class LoanPayment
{
// The program will let the user to enter loan amount and calculate the
// monthly and total payment of each interest rate
// To create a Scanner which has static object
static Scanner reading = new Scanner(System.in);
public static void main(String[] args)
{
double loanAmount;
int years;
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double lowIntRate;
double highIntRate;
char solution;
boolean choice = true;
StudentID();
// Loan amount, loan period and annual interest rate is not an negative
number and
// display a table form of the monthly paymentand the total payment
while(choice)
{
// Enter the loan amount
System.out.print("Enter the loan amount:");
loanAmount = ofDouble();
// To check whether the input is equal to and less than zero
while (loanAmount <= 0)
{
System.out.println("The loan amount is equal to and less than Zero,
Please re-type it again");
System.out.print("Enter the loan amount:");
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