JavaTutorial/src/F032_SolutionMortgageCalculator.java at master · windweb/JavaTutorial · GitHub

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import java.text.NumberFormat;

import java.util.Scanner;

public class F032_SolutionMortgageCalculator {

public static void main(String[] args) {

final byte MONTHS_IN_YEAR = 12;

final byte PERCENT = 100;

int principal = 0;

float monthlyInterest = 0;

int numberOfPayments = 0;

Scanner scanner = new Scanner(System.in);

while (true) {

System.out.print("Principal / Основная сумма (1K - 1M): ");

principal = scanner.nextInt();

if (principal >= 1000 && principal <= 1_000_000)

break;

System.out.println("Enter a value between 1000 and 1,000,000");

}

while (true) {

System.out.print("Annual Interest Rate / Годовая процентная ставка: ");

float annualInterest = scanner.nextFloat();

if (annualInterest >= 1 && annualInterest <= 30) {

monthlyInterest = annualInterest / PERCENT / MONTHS_IN_YEAR;

break;

}

System.out.println("Enter a value between 1 and 30");

}

while (true) {

System.out.print("Period (Years): ");

byte years = scanner.nextByte();

if (years >= 1 && years <= 30) {

numberOfPayments = years * MONTHS_IN_YEAR;

break;

}

System.out.println("Enter a value between 1 and 30");

}

double mortgage = principal

* (monthlyInterest * Math.pow(1 + monthlyInterest, numberOfPayments))

/ (Math.pow(1 + monthlyInterest, numberOfPayments) - 1);

String mortgageFormatted = NumberFormat.getCurrencyInstance().format(mortgage);

System.out.println("Mortgage / Ипотека: " + mortgageFormatted);

}

JavaTutorial/src/F032_SolutionMortgageCalculator.java at master · windweb/JavaTutorial · GitHub

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