public class SavingsAccount {
	private static double annualInterestRate;
	private double savingsBalance;

	public SavingsAccount(double balance) {
		savingsBalance = balance;
	}

	public double getSavingsBalance() {
		return savingsBalance;
	}

	public static void modifyInterestRate(double rate) {
		annualInterestRate = rate;
	}

	public void calculateMonthlyInterest() {
		savingsBalance = savingsBalance + savingsBalance *
		   annualInterestRate / 12;
	}


}//class



//////////////////////new file//////////////////////////////////////

public class TestSavingsAccount {

	public static void main (String[] args) {
		SavingsAccount saver1 = new SavingsAccount(2000.00);
		SavingsAccount saver2 = new SavingsAccount(3000.00);
		SavingsAccount.modifyInterestRate(.04);
		saver1.calculateMonthlyInterest();
		saver2.calculateMonthlyInterest();
		System.out.println("Saver1 balance: " + saver1.getSavingsBalance());
		System.out.println("Saver2 balance: " + saver2.getSavingsBalance());
		SavingsAccount.modifyInterestRate(.05);
		saver1.calculateMonthlyInterest();
		saver2.calculateMonthlyInterest();
		System.out.println("Saver1 balance: " + saver1.getSavingsBalance());
		System.out.println("Saver2 balance: " + saver2.getSavingsBalance());
	}//main


}//class