public void calculateMonthInterestRate() {
Integer fee = type.getFee();
Double interestRate = type.getInterestRate();
if (fee != null) {
balance -= fee;
if (balance < 0) frozen = true;
} else if (interestRate != null) balance *= (1 + interestRate);
}
public Account(
int accountNum,
int initialDeposit,
Branch branch,
CustomerInfo customerInfo,
AccountType type) {
if (type.getInitialDeposit() > initialDeposit)
throw new IllegalArgumentException("initial deposit is too small");
if (customerInfo == null) throw new IllegalArgumentException("customerInfo should be passed");
this.accountNum = accountNum;
this.balance = initialDeposit;
this.branch = branch;
this.customerInfo = customerInfo;
this.type = type;
this.frozen = false;
this.transactions = new LinkedList<>();
}