Question

I have the following code so far:

/*
 * This method adds only the items that don’t already exist in the
 * ArrayCollection. If items were added return true, otherwise return false.
 */
public boolean addAll(Collection<? extends E> toBeAdded) {

    // Create a flag to see if any items were added
    boolean stuffAdded = false;


    // Use a for-each loop to go through all of the items in toBeAdded
    for (something : c) {

        // If c is already in the ArrayCollection, continue
        if (this.contains(c)) { continue; }     

            // If c isn’t already in the ArrayCollection, add it
            this.add(c)
            stuffAdded = true;
        }

        return stuffAdded;
    }
}

My question is: what do I replace something (and c) with to make this work?

Answer 1

Something like this should do:

// Use a for-each loop to go through all of the items in toBeAdded
for (E c : toBeAdded) {

    // If c is already in the ArrayCollection, continue
    if (this.contains(c)) {
        continue;
    }

    // If c isn’t already in the ArrayCollection, add it
    this.add(c);

    stuffAdded = true;
}

---

The general form is:

for (TypeOfElements iteratorVariable : collectionToBeIteratedOver) `