How to implement iterator.

This is a java program. I have a boolean array and need to use an iterator although I am unsure of how to implement it. I don't need assistance in the BooleanArray class so will just share the portion for the variables. Thank you in advance for the help.

public class BooleanArray extends AbstractSet { private static final int DEFAULT_CAPACITY = 10;

private boolean[] data; private int manyItems;

}

I need help with thisIterator class.

private class thisIterator implements Iterator {

private int count = 0; // how many values have we seen (and not removed) private int currentIndex = -1;

@Override public boolean hasNext() { }

@Override public Integer next() {

if (!hasNext()) throw new NoSuchElementException("no more available"); return nextElement; }

@Override public void remove() { throw new UnsupportedOperationException("cannot remove element from bag");

} }