//WT3 added below Xfer
public void Xfer(Account from, Account to, double amount)
{
if (amount <= 0)
{
throw new ArgumentException("Amount must be greater than zero");
}
else if (from == to)
{
throw new ArgumentException("Accounts must be different");
}
else if (amount > from.sumTransactions())
{
throw new ArgumentException("Not enough moola in account to transfer");
}
else
{
from.Withdraw(amount);
to.Deposit(amount);
}
}
