I have my program with my amoritization list in it, but I need to remove it and replace it with an array, which I also made up. The problem is that i am not sure how to remove the list, and add the array. Can someone tell me what the best way to do it is?
Here is the program
import java.text.*; // Needed for NumberFormat
import java.io.*; // Needed for user input
class MortgagePayment {
public static void main(String[] arguments) throws IOException {
/* All static variables are located at the end of the main as private static
final variables. */
/* Pay calculations are figured within the static final variable for MonthlyPayment[] at the end
of the main. */
System.out.println("\nThe following is the possible results on a home costing "
+ nf.format(InitialLoanAmount) + ".\n\n"
+ "Mortgage\t\tTerm\t\tInterest Rate\t\tMonthly Payment\n\n"
+ "Mortgage 1\t\t" + LoanTerm[0] + " years\t\t" + (AnnualInterestRate[0] * 100));
System.out.println("Please select mortgage to see an amortization list.\n\n"
+ "Type a \"1\" for Mortgage 1.\n");
/* The next three variables are used as transitional variables which are assigned different
values according to which array position it is pulled from in the user's input. */
double SelectedMonthlyPayment = 0.0;
int SelectedLoanTerm = 0;
double SelectedInterestRate = 0.0;
try {
// Prompt the user
System.out.print( "Enter a mortgage number from above: " );
// Gets user input and converts to integer
int input1 = Integer.parseInt( STDIN.readLine() );
switch (input1) {
case 1: System.out.println("\nYou have selected Mortgage " + input1 + ".\n" );
SelectedMonthlyPayment = MonthlyPayment[0];
SelectedLoanTerm = LoanTerm[0];
SelectedInterestRate = AnnualInterestRate[0];
System.out.println("If these payments are made on a monthly basis,\n"
+ "your amortization schedule will look as follows:\n");
System.out.println("\nPayment\t\t\tLoan Balance\tPrinciple Paid\tInterest Paid\n");
pause1();
break;
default: System.out.println("\nI am sorry, this is not a valid Mortgage seletion."
+ " Please try again.\n" );
System.exit(1);
} // End of switch
} // End of try
// Tests user input to be an integer and prints error message if it is not
catch ( NumberFormatException e ) {
System.out.println("\nI am sorry, this is not a valid Mortgage seletion."
+ " Please try again.\n" );
System.exit(1);
} // End of catch
// Declares and initializes variables used for the amortization list
int PaymentNumber = 1;
double InterestRate = 0.0;
double InterestPayment = 0.0;
double PrinciplePayment = 0.0;
double LoanBalance = InitialLoanAmount;
// while loop to control amortization loop environment and keep it true
while (true) {
/* if for some reason the loop fails to quit this if loop will break
out of the while loop when LoanBalance is ZERO */
if (LoanBalance <= 0) {
break;
}
// Loop for amortization list
for (int count = 1; PaymentNumber <= (SelectedLoanTerm * 12) ; count++) {
// Calculations to determine amortization
InterestRate = SelectedInterestRate / 12;
InterestPayment = LoanBalance * InterestRate;
PrinciplePayment = SelectedMonthlyPayment - (LoanBalance * InterestRate);
LoanBalance = LoanBalance - PrinciplePayment;
// This is to reduce final LoanBalace figure if <= $5.00 and help break out of the loop
if (LoanBalance <= 5.00) {
LoanBalance = 0.00;
}
System.out.println(+PaymentNumber + ". " + nf.format(SelectedMonthlyPayment)
+ "\t\t" + nf.format(LoanBalance)
+ " \t" + nf.format(PrinciplePayment) + "\t\t"
+ nf.format(InterestPayment) + "\n");
PaymentNumber++;
// Progresses 10 lines of the amortization after a brief pause
if (count == 10) {
// Prompts user for input.
System.out.println("Enter a \"C\" to CONTINUE or a \"Q\" to QUIT.");
// Initializes input2 (the second user's input) as an empty String.
String input2 = null;
/* Gets user's input, returns it to UPPERCASE, and tests it to see if
it is a 'C', a 'Q', or a bogus input. */
try {
input2 = STDIN.readLine();
input2 = input2.toUpperCase();
if (input2.equals(S1)) {
break;
}
else if (input2.equals(S2)) {
System.exit(0);
}
else {
System.exit(0);
}
} catch (IOException ioe) {
System.out.println("IO error!");
System.exit(1);
}
count = 1;
} // End of 'if' loop
} // End of 'for' loop
} // End of 'while' loop
} // End of main
// Declares STATIC FINAL variables used within the MAIN
private static final float InitialLoanAmount = 200000;
private static final int LoanTerm[] = { 7, 15, 30 };
private static final float AnnualInterestRate[] = { 0.0535f, 0.055f, 0.0575f };
private static final double MonthlyPayment[] = { (InitialLoanAmount * (AnnualInterestRate[0]/12)) / (1 - (Math.pow
(1/(1 + (AnnualInterestRate[0]/12)), (LoanTerm[0] * 12)))) , (InitialLoanAmount * (AnnualInterestRate[1]/12)) / (1 - (Math.pow
(1/(1 + (AnnualInterestRate[1]/12)), (LoanTerm[1] * 12)))) , (InitialLoanAmount * (AnnualInterestRate[2]/12)) / (1 - (Math.pow
(1/(1 + (AnnualInterestRate[2]/12)), (LoanTerm[2] * 12)))) };
private static NumberFormat nf = NumberFormat.getCurrencyInstance();
private static BufferedReader STDIN = new BufferedReader( new InputStreamReader( System.in ) );
private static final String S1 = "C";
private static final String S2 = "Q";
/* Below are two independent pausing 'void' functions allowing for pausing intervals
according to the value set in the 'Thread.sleep()' parenthesis. */
// First delay function for user to read screen
private static void pause1() {
try {
Thread.sleep(5000);
} catch (InterruptedException e) {}
} // End of pause1
} // End of programHere is the array
import java.io.*; // java input output package
import java.text.DecimalFormat;
class PaymentArray2
{
public static void main(String[] arguments)
{
double amount = 200000;
int[]term = {7, 15, 30};
double[] rate = {.0535, .055, .0575};
DecimalFormat twoDigits = new DecimalFormat("$000.00");
System.out.println("With a loan amount of " +twoDigits.format(amount));
for (int i = 0; i < rate.length; i++)
{
System.out.print("for " + term[i] + " years");
System.out.print("\tat a rate of " + rate[i]);
double payment = (amount*(rate[i]/12))/(1-(Math.pow(1/(1+(rate[i]/12)),(term[i]*12))));
System.out.println("\tThe monthly payment will be " + twoDigits.format(payment));
}
}
}