```
package com.mortcalc;
import java.text.NumberFormat;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
/*
mathematical formula to calculate mortgage
M = [P × {r(1 + r)^n}/{(1 + r)^n - 1}]
M = Mortgage
P = Principal Amount
r = Monthly Interest Rate
n = Number of Monthly Payments [Periods (Months)]
*/
// declaration of constant values
final byte PERCENT = 100;
final byte MONTHS_IN_YEAR = 12;
Scanner userInput = new Scanner(System.in); // declaring scanner object to accept user input
// asking for user input and giving back appropriate values
System.out.print("Principal Amount: ");
int principal = userInput.nextInt();
System.out.print("Annual Interest Rate: ");
float monthlyInterestRate = ((userInput.nextFloat() / PERCENT) / MONTHS_IN_YEAR);
System.out.println("Monthly Interest Rate: " + monthlyInterestRate);
System.out.print("Period (Years): ");
short period= (short) (userInput.nextShort() * MONTHS_IN_YEAR); // stores 'period' in months
System.out.println("Period (Months): " + period);
userInput.close(); // closing the scanner object
// formula for calculating mortgage implemented in java
double mortgage = (principal * (monthlyInterestRate * (Math.pow(1 + monthlyInterestRate, period)))
/ ((Math.pow(1 + monthlyInterestRate, period)) - 1));
// prints the properly formatted mortgage value in local currency
System.out.println("Mortgage: " + NumberFormat.getCurrencyInstance().format(mortgage));
}
}
```

what is your question?

I don’t have any questions. I was just sharing my take of the project with the community

Hello @Mnoo!

After taking a look at your screenshot, I think it’s because you’re separating the decimal value from the integral value (of annual interest rate) using a ‘comma’ instead of a ‘decimal’.

How you’ve written it - **3,92**

How it should be written - **3.92**

I hope that solves your issue. Cheers.

Actually I even tried (.)

but it doesn’t work either

that is great… keep going, bro.

.

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You did a very nice job. Great! I would definitely not be able to do something like this.

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