java mortgage calcuator using array for 3 different loan

**r035198x** · Dec 7 '06, 07:19 AM

Originally posted by phjones

Need help programming mortagage calculator for 3 different loans 7 year, 15 year and 30 year. using java array I am a beginner with Java, This is what I have so far. Need to know if I am off the path,

import java.math.*;//*loan calculator
import java.text.*;//*formats numbers
public class 3 Mortgage loans {

// declare class variable array
int[] mortgage calculator

//construct the array
mortgage calculator = new int[17];

Code:

[CODE]double loan = 200000
			double term1 =360//*360 month for 30 year mortgage
			double interRate1 = 0.0575; //*5.75% 5.75/100interest rate 30year mortgage
			double monthlyRate1 = (interestRate1/12)
			double term2 = 84//*7year mortgage loan
			double interestRate2 = 0.0535;//*5.35 5.35/100 interest rate 7 year mortgage
			double monthlyRate2 = (interestRate2/12);//*rate calculation on 7 year mortgage loan
			double term3 = 180

// 15 year mortgage
double interestRate3 = 0.0550;//*5.5 5.5/100 interest rate on 15 year mortgage
double monthlyRate3 = (interestRate3/12);//* monthlyRate for 15 year mortgage

//Discount factr calculator for the three loans
double discountFactor1 = (Math.pow ((1 + monthlyRate1),
term1)-1/(monthlyRate1 * Math.pow((1 + monthlyRate1),t erm1));

double discountFactor2 = (Math.pow((1 + monthlyRate2),t erm2)-1/
(monthlyRate2* Math.pow((1 + monthlyRate2),t erm2));

double discountFactor3 = (Math.pow((1 + monthlyRate3), term3) - 1)/
(monthlyRate3 * Math.pow((1 + monthlyRate3), term3));

double payment1 = loan/discountFactor1 ; //*Rate Calcualtion for 30 yearn mortgage
double payment2 = loan/discountFactor2 ; //*Rate Calculaion for 7 year morgage
double payment3 = loan/discountFactor3 ; //*Rate Clculation for 15 year mortgage
[/CODE]

use public class MortgageLoans as the class name. The one you have is invalid.
You should define 3 arrays of type double not one of type int
You will also need a loop to calculate the monthly repayments amounts.
Make the above corrections and post the code

**phjones** · Dec 8 '06, 04:31 AM

Unfortunately. This maybe a second posting. I sorry just getting started with this chat area. See new code below:

/**
* @(#)3 Mortgage loans.java
*
* 3 Mortgage loans application
*
* Phyllis J Jones
* Purpose to write a program in Java without a graphical user interface and have
it calculate the payment amount for 3 mortgage loans.
*/
import java.math.*;//*loan calculator
import java.text.*;//*formats numbers
public class MortgageLoans {

// declare class variable array
double mortgage calculator1[];
double mortgage calculator2[];
double mortgage calculator3[];
//construct the array
mortgage calculator1 = new double[6];
mortgage calculator2 = new double[6];
mortgage calculator3 = new double[6];

double loan = 200000
double term1 =360//*360 month for 30 year mortgage
double interRate1 = 0.0575; //*5.75% 5.75/100interest rate 30year mortgage
double monthlyRate1 = (interestRate1/12)
double term2 = 84//*7year mortgage loan
double interestRate2 = 0.0535;//*5.35 5.35/100 interest rate 7 year mortgage
double monthlyRate2 = (interestRate2/12);//*rate calculation on 7 year mortgage loan
double term3 = 180 // 15 year mortgage
double interestRate3 = 0.0550;//*5.5 5.5/100 interest rate on 15 year mortgage
double monthlyRate3 = (interestRate3/12);//* monthlyRate for 15 year mortgage

//Discount factr calculator for the three loans
double discountFactor1 = (Math.pow ((1 + monthlyRate1),
term1)-1/(monthlyRate1 * Math.pow((1 + monthlyRate1),t erm1));

double discountFactor2 = (Math.pow((1 + monthlyRate2),t erm2)-1/
(monthlyRate2* Math.pow((1 + monthlyRate2),t erm2));

double discountFactor3 = (Math.pow((1 + monthlyRate3), term3) - 1)/
(monthlyRate3 * Math.pow((1 + monthlyRate3), term3));

double payment1 = loan/discountFactor1 ; //*Rate Calcualtion for 30 yearn mortgage
double payment2 = loan/discountFactor2 ; //*Rate Calculaion for 7 year morgage
double payment3 = loan/discountFactor3 ; //*Rate Clculation for 15 year mortgage

//loop While not done
while(loan > 0)
{

java.text.Decim alFormat dfm = new java.text.Decim alFormat(",###. 00");
System.out.prin tln("Your monthly payment is $" + dfm.format(paym ent)+ "cemts");
// loop while done
if(loan>0)
{
double payment1 = loan/discountFactor1 ;//*Rate Calculation
double payment2 = loan/discountFactor2 ;//*Rate Calculation
double payment3 = loan/duiscountFactor 3;//*Rate Calculation
}
else
payment1 = payment/discountFactor1 ;//Rate Calculation
payment2 = payment/discountFactor2 ;//Rate Calcuklation
payment3 = payment/discountfactor3 ;//Rate Calculation
}
//Output

}

}

java mortgage calcuator using array for 3 different loan

java mortgage calcuator using array for 3 different loan

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