Here you can find the source of count(Iterable iterable)
| Parameter | Description |
|---|---|
| iterable | is the Iterable to count the elements in. |
public static long count(Iterable<?> iterable)
//package com.java2s;
//License from project: Apache License
import java.util.Iterator;
public class Main {
/**/*from w ww.j a v a2s.c o m*/
* Runs through an {@link Iterable} and counts the number of elements.
*
* @param iterable
* is the {@link Iterable} to count the elements in.
* @return A long value with the number of elements is returned.
*/
public static long count(Iterable<?> iterable) {
long[] count = { 0 };
iterable.forEach(c -> count[0]++);
return count[0];
}
/**
* Runs through an {@link Iterator} and counts the number of elements.
*
* @param iterator
* is the {@link Iterator} to count the elements in.
* @return The current number of elements is returned.
*/
public static long count(Iterator<?> iterator) {
long[] count = { 0 };
iterator.forEachRemaining(c -> count[0]++);
return count[0];
}
}