/**

* The file name is ComputeLoan.java.

* Calculate the total loan payment.

*/

Import javax.swing.jooptionpane;

Public computer {

//main method

Public static void main(String [] agrs) {

//Enter the annual interest rate.

string anunanalinterestratestring = joptionpane . showinputdialog(" Please input "+

"Annual interest rate, e.g. 7.8");

//Converts a string to double precision.

double annualInterestRate = double . parse double(anunalInterestRateString)；

//Convert annual interest rate into monthly interest rate.

double monthly interestate = annual interestate/ 1200；

System.out.println ("annual interest rate is"+annual interest rate);

System.out.println ("monthly interest rate is"+monthly interest ");

//Enter the number of years

string numofyearstring = joptionpane . showinputdialog(" Please input "+

"Number of years, e.g. 5");

//Convert a string to an integer

int numOfYears = integer . parse int(numofyearstring)；

System.out.println ("number of years is"+numofyears);

//Enter the total loan amount

String totalloaninput = jooptipane.showinputdialog ("Please enter the total loan amount"+

",such as 9899888.2");

//The string to be converted with double precision.

double total loan = double . parse double(totalLoanInput)；

System.out.println ("total loan is"+total loan ");

//Calculate the total monthly payment.

double total monthly payment = total loan * monthly interestate/

( 1- 1/(math . pow( 1+monthly interest，numOfYears * 12)))；

double total yearly payment = total monthly payment * 12 * numOfYears；

//format reserves two digits after the decimal point.

totalMonthlyPayment =(int)(totalMonthlyPayment * 100)/ 100.0；

totalYearlyPayment =(int)(totalYearlyPayment * 100)/ 100.0；

//Display the results

String output = "Monthly payment is \n"

+Total Monthly Payment+"\ nThe total loan payment is \ n"

+total yearly payment；

joptionpane . showmessagedialog(null，output)；

}

}