public class Main {
    public static void main(String[] args) {
        final Account accA = new Account("Acc 1");
        final Account accB = new Account("Acc 2");
        accA.deposit(1000.00);
        accB.deposit(1000.00);

        Transaction t1 = new Transaction("T01", accA, accB, 100.00);
        Transaction t2 = new Transaction("T02", accB, accA, 500.00);

        t1.start();
        t2.start();
    }
}