Java Utililty Methods Iterator Size

List of utility methods to do Iterator Size

Description

The list of methods to do Iterator Size are organized into topic(s).

long ix = 0;
for (; iterator.hasNext(); ++ix)
 iterator.next();
return ix;

int count = 0;
while (triples.hasNext()) {
 triples.next();
 count++;
return count;

long count(Iterator iterator)
Determines the number of elements in an iteration.

if (iterator == null) {
 return 0;
long count = 0;
while (iterator.hasNext()) {
 ++count;
 iterator.next();
return count;

if (it == null) {
 throw new IllegalArgumentException("it == null");
int count = 0;
while (it.hasNext()) {
 it.next();
 count++;
return count;

long counter(final Iterator iterator)
Count the number of objects in an iterator.

long counter = 0;
try {
 while (true) {
 iterator.next();
 counter++;
} catch (final NoSuchElementException e) {
return counter;

int size(final Iterator iter)
Returns the number of elements in the iterator sequence.

if (iter == null) {
 throw new NullPointerException();
int count = 0;
while (iter.hasNext()) {
 iter.next();
 count++;
return count;

int size(Iterator source)
Get the size of an iterator (number of items in it).

int result = 0;
while (source.hasNext()) {
 source.next();
 ++result;
return result;

int size(Iterator iterator)
Resolves the size of a given Iterator by iterating over it.

int retval = 0;
if (iterator != null) {
 for (; iterator.hasNext(); iterator.next()) {
 retval++;
return retval;

long size = 0;
while (iterator.hasNext()) {
 iterator.next();
 size += 1;
return size;