How to call a method with arrays

Question

This program is for calculating the monthly mortgage for 5 properties. I have made the whole program work without methods but now need to break it up into different methods. I need help with creating a method that will calculate mortgage and return it to an array. This is what I have so far

import javax.swing.JOptionPane;

public class test1 
{
    public static void main(String[] args)
    {
        //variables 
        String[] address = new String[5];
        double[] cost = new double[5];
        double interest = 0.0; 
        double length = 0.0;
        double[] monthlyMortgage = new double[5];
        
        fillData(address,cost,interest,length);
        monthlyMortgage = getMortgage(cost, interest,length);
        getLowest(address,monthlyMortgage);
    }
    public static void fillData(String[] address,double[] cost,double interest,double length)
    {
        //Get address and cost from user
        
        for (int i = 0; i < 5; i++)
        {
            address[i] = JOptionPane.showInputDialog("Enter property address: ");
            cost[i] = Double.parseDouble(JOptionPane.showInputDialog("Enter cost of property: "));
        }
    


        //Get interest and length from user
        interest = Double.parseDouble(JOptionPane.showInputDialog("Enter mortgage interest rate: "));
        length = Double.parseDouble(JOptionPane.showInputDialog("Enter mortgage length: "));
    }

        //Calculate monthly mortgage for each property
        
        public static double[]getMortgage(double[] cost, double interest,double length)
        {
            
        double[] monthlyMortgage1 = new double[5];
        for (int i = 0; i < 5; i++)
        {
            monthlyMortgage1[i] = ((cost[i] + (cost[i] * interest)) / (12 * length));
        }
        
        return monthlyMortgage1;
        }

public static void getLowest(String[] address,double[] monthlyMortgage)
{
//Find lowest monthly mortgage
        double lowestMonthlyMortgage = monthlyMortgage[0];
        String lowestMortgageAddress = "";
        for (int i = 0; i < 5; i++)
        {
            if (monthlyMortgage[i] < lowestMonthlyMortgage)
            {
                lowestMonthlyMortgage = monthlyMortgage[i];
                lowestMortgageAddress = address[i];
            }
        }
        
        //Print out monthly mortgage and address
        for (int i = 0; i < 5; i++)
        {
            JOptionPane.showMessageDialog(null, "Address: " + address[i] + "\n"
                    + "Monthly Mortgage: " + monthlyMortgage[i]);
        }
        
        //Print lowest monthly mortgage
        JOptionPane.showMessageDialog(null, "Address of lowest monthly mortgage: " + lowestMortgageAddress);
    }
}

When I run this, I keep getting "infinity" as the total for the monthly mortgage.

How to call a method with arrays

0 Answers0