Question

this is my first programming course, and i want to make sure i am doing this problem correctly. if you could check over my work it would be greatly appreciated.

Write a method to compute and return the balance for a checking account, given the starting balance and an array of Check objects. You may assume that the Check class already exists and has a method to get the amount from a particular check object called: double getAmount()

The array is not full, and may have gaps in it – make sure you test to see if there is an object there before you try to access it! Make your code work for any length array!

The header for the method is provided for you:

public double computeBalance(double startingBalance, Check[] register) {

    int i = 0; // i must be initialized and declared somewhere at least
    double total = 0.0;

    while ((i >= check.length) && check[i] != null) { // is >= correct? you do i++!
           total = (total + getAmount(check[i])); // should you add/compute somewhere 
                                                      // the given amounts
           i++;

    }  

    System.out.println(total);
}

Answer 1

I understand that you are asking for more than for the solution itself but there are obviously better people to guide you. You can use my example as a reference to what others are explaining to you.

public double computeBalance(double startingBalance, Check[] register) {

    // let's start off from the starting balance
    double total = startingBalance;

    // go over all elements starting from 0
    for (int i = 0; i < check.length; i++) {

        // make sure you did not encounter null element
        if (register[i] != null) {

            // increase the total by the amount of the Check
            total += register[i].getAmount();
        }
    }

    // and finally return the resulting value
    return total;
}