Problem with a for loop

So I have an array of integers (I'm not allowed to use the java class ArrayList) and I need a method to add a new word to my array.

What I have at the moment is a for loop:

Code:

---

public void addNewInt(int i) {
        for (int a = 0; a < 100; a++) {
            if (words[a] == null) {
                words[a] = i;
            }
        }
    }

---

This is adding the integer, but obviously it's adding it to all 100 spaces (when the array is empty which it currently is).

I want the for loop to iterate through my array until it finds an empty space, add the integer to the empty space, but then stop. How can I correct my code to do this, or am I on the wrong lines completely?

Help much appreciated :)

break;

10 chars.

public void addNewInt(int i) {
for (int a = 0; a < 100; a++) {
if (words[a] == null) {
words[a] = i;
break;
}
}
}

Thankyou very much