public class SavingsDemo {
    public static void main(String argv[]) {
		// create some accounts
		Account acc = new Account("Pedro Felzenszwalb", 111);
		Savings sav = new Savings("Pedro's savings", 112, 1);
		
		// deposit into account and transfer to savings
		acc.deposit(5000);
		Account.transfer(acc, sav, 4000);
		
		// accumulate interest over 10 months
		for (int i = 0; i < 10; i++) {
			sav.monthlyInterest();
		}
		
		// print account info
		acc.print();
		sav.print();
    }
}

/*

running the program

banana:~/shared/classes/java/account pff$ javac SavingsDemo.java 
banana:~/shared/classes/java/account pff$ java SavingsDemo 
Account owner: Pedro Felzenszwalb
Account number: 111
Balance: 1000.0
Account owner: Pedro's savings
Account number: 112
Balance: 4418.488501644817
banana:~/shared/classes/java/account pff$ 

*/