Java Utililty Methods Iterable Count

Iterable<Integer> generator = new Iterable<Integer>() {
    public Iterator<Integer> iterator() {
        return new Iterator<Integer>() {
            Iterator<T> iter = iterable.iterator();
            int currentValue = 0 - step;
            @Override
            public boolean hasNext() {
                return iter.hasNext();
...

Iterator i = iterable.iterator();
return count(i);

int count = 0;
Iterator<?> ii = i.iterator();
while (ii.hasNext()) {
    ii.next();
    count++;
return count;

long[] count = { 0 };
iterable.forEach(c -> count[0]++);
return count[0];

int count = 0;
if (iterable != null) {
    Iterator<T> iter = iterable.iterator();
    while (iter.hasNext()) {
        iter.next();
        count++;
return count;