I had gotten an interview through an employee referral.

Someone contacted me about a time. There was a miscommunication on their part between HR and the manager, and they didn't call me at the first time we planned, so we had to plan another one.

The manager of that team called me. They first told me about what they did, then asked me questions about my resume, and finally asked technical questions.

What is the difference between C++ and Java? I mentioned something about pointers, and he wanted me to elaborate.

What is the difference between StringBuilder and StringBuffer?

He sent me some code and I made suggestions:

java import java.math.BigDecimal;

public class CashCalculatorBasic {

public BigDecimal getCalculatedAvailableBalance(BigDecimal currentBalance, BigDecimal totalDebits, BigDecimal totalCredits) {
    BigDecimal result = currentBalance.subtract(totalDebits).add(totalCredits);
    System.out.println("The calculated result is " + result);
    return result;
}

public static void main(String[] args) {
    new CashCalculatorBasic().getCalculatedAvailableBalance(
            new BigDecimal("1250.00"), new BigDecimal("250.00"), new BigDecimal("500.00"));
}

}