Here you can find the source of size(final Iterable iterable)
| Parameter | Description |
|---|---|
| iterable | iterable to get size of. |
public static int size(final Iterable<?> iterable)
//package com.java2s; /*//w ww. j a va 2s. c o m * The MIT License (MIT) * * Copyright (c) 2016. Diorite (by Bart?omiej Mazur (aka GotoFinal)) * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ import java.util.Collection; import java.util.Iterator; public class Main { /** * Returns size of iterator, method will use iterator. * * @param iterator iterator to be used. * * @return size of iterator, method will use iterator. */ public static int size(final Iterator<?> iterator) { int count; for (count = 0; iterator.hasNext(); ++count) { iterator.next(); } return count; } /** * Returns size of iterable. * * @param iterable iterable to get size of. * * @return size of iterable. */ public static int size(final Iterable<?> iterable) { return (iterable instanceof Collection) ? ((Collection<?>) iterable) .size() : size(iterable.iterator()); } }