import javax.swing.JOptionPane;
import java.text.NumberFormat;

class LoanCalculator{
	public static void main(String [] args){
		int confirm;
		do{
			double principal = Double.parseDouble(JOptionPane.showInputDialog(
				"Enter Amount you wish to borrow" ));
			double rate      = Double.parseDouble(JOptionPane.showInputDialog(
				"Enter Annual interest rate (e.g. 6.5):"));
			int year         = Integer.parseInt(JOptionPane.showInputDialog(
				"Enter number of years"));

			NumberFormat fmt = NumberFormat.getCurrencyInstance();
			System.out.println("The monthly payment is .. " + fmt.format(monthlyPayment(principal, rate, year)));
			System.out.println("Total Payment " + fmt.format(totalPayment(principal, rate, year)));

			confirm = JOptionPane.showConfirmDialog(
				null,
				"Do Another Computation ?",
				"Confirmation Dialog",
				JOptionPane.YES_NO_OPTION);
		}while(confirm == JOptionPane.YES_OPTION);
		System.exit(0);
	}// end main

	public static double monthlyPayment(double p, double r, int y){
		double monthlyRate = r / 12 / 100;
		int period         = y * 12;
		double numerator   = monthlyRate * Math.pow((1 + monthlyRate), period);
		double denominator = Math.pow((1 + monthlyRate), period) - 1;
		return p * numerator / denominator;
	}

	public static double totalPayment(double p, double r, int y){
			return monthlyPayment(p,r,y) * y * 12;
	}

}