Here you can find the source of removeElement(final Iterable
| Parameter | Description |
|---|---|
| DataType | The type of data. |
| iterable | The iterable to remove the value from. |
| index | The 0-based index to remove from the iterable. |
| Parameter | Description |
|---|---|
| IndexOutOfBoundsException | If the index is less than zero orgreater than or equal to the number of elements in the iterable. |
| UnsupportedOperationException | If the iterable does not supportremove. |
public static <DataType> DataType removeElement(final Iterable<DataType> iterable, int index)
//package com.java2s; /*//from w ww . ja v a2 s . c o m * File: CollectionUtil.java * Authors: Justin Basilico * Company: Sandia National Laboratories * Project: Cognitive Foundry * * Copyright March 25, 2008, Sandia Corporation. * Under the terms of Contract DE-AC04-94AL85000, there is a non-exclusive * license for use of this work by or on behalf of the U.S. Government. Export * of this program may require a license from the United States Government. * See CopyrightHistory.txt for complete details. * */ import java.util.Iterator; import java.util.List; public class Main { /** * Removes and returns the indexed value into the {@code Iterable}. It first * checks to see if the {@code Iterable} is a {@code List}, and if so calls * the remove method. Otherwise, it walks the {@code Iterable} to get to the * element and remove it. This only works on {@code Iterable}s that are * {@code List}s or whose {@code Iterator} implements the optional * {@code remove} method. * * @param <DataType> The type of data. * @param iterable The iterable to remove the value from. * @param index The 0-based index to remove from the iterable. * @return The value removed from the given index in the iterable. * @throws IndexOutOfBoundsException If the index is less than zero or * greater than or equal to the number of elements in the iterable. * @throws UnsupportedOperationException If the iterable does not support * remove. */ public static <DataType> DataType removeElement(final Iterable<DataType> iterable, int index) { if (iterable instanceof List<?>) { return ((List<DataType>) iterable).remove(index); } else { if (index < 0) { // Bad index. throw new IndexOutOfBoundsException("index must be >= 0"); } Iterator<DataType> iterator = iterable.iterator(); while (iterator.hasNext()) { DataType value = iterator.next(); if (index == 0) { iterator.remove(); return value; } index--; } // Bad index. throw new IndexOutOfBoundsException("index >= iterable size"); } } }