public static void main(String[] args) throws IOException {
String input;
int numberOfMonths;
double interestRate,
startingBalance,
deposit,
withdrawal,
balance = 0,
totalDeposits = 0, // accumulator
totalWithdrawals = 0, // accumulator
totalInterest = 0; // accumulator
input = JOptionPane.showInputDialog("Enter the annual interest rate as a percentage.");
interestRate = Double.parseDouble(input);
interestRate /= 100;
input = JOptionPane.showInputDialog("Enter the account's starting balance.");
startingBalance = Double.parseDouble(input);
SavingsAccount account = new SavingsAccount(interestRate, startingBalance);
input = JOptionPane.showInputDialog("Enter the number of months since the account opened.");
numberOfMonths = Integer.parseInt(input);
for (int i = 1; i <= numberOfMonths; i++) {
input = JOptionPane.showInputDialog("Enter total deposits for month " + i + ":");
deposit = Double.parseDouble(input);
balance = account.addDeposit(deposit);
input = JOptionPane.showInputDialog("Enter total withdrawals for month " + i + ":");
withdrawal = Double.parseDouble(input);
balance = account.subtractWithdrawal(withdrawal);
balance = account.addMonthlyInterest();
totalDeposits = totalDeposits + deposit;
totalWithdrawals = totalWithdrawals + withdrawal;
totalInterest = account.getInterestEarned();
}
DecimalFormat formatter = new DecimalFormat("#0.00");
JOptionPane.showMessageDialog(
null,
"Balance is "
+ formatter.format(balance)
+ ".\n"
+ "Total deposits are "
+ totalDeposits
+ ".\n"
+ "Total withdrawals are "
+ totalWithdrawals
+ ".\n"
+ "Total interest is "
+ formatter.format(totalInterest)
+ ".\n");
System.exit(0);
}
