My Mortgage Calculator Project - Version 1

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(; // 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 :slight_smile:

Please help me out this problem
The flouting numbers doesn’t work with my IntelliJ editor

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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