In this example we shall show you how to obtain a LinkedList Iterator. The Iterator is used to remove elements from an underlying Collection. To obtain a LinkedList Iterator one should perform the following steps:
- Create a LinkedList.
- Populate the list with elements, with
add(E e)API method. - Obtain an Iterator, using
iterator()method. - Iterate over the elements of the collection, with h
asNext()andnext()methods of Iterator,
as described in the code snippet below.
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | package com.javacodegeeks.snippets.core;import java.util.Iterator;import java.util.LinkedList; public class LinkedListIterator { public static void main(String[] args) { // Create a LinkedList and populate it with elements LinkedList linkedList = new LinkedList(); linkedList.add("element_1"); linkedList.add("element_2"); linkedList.add("element_3"); linkedList.add("element_4"); linkedList.add("element_5"); // The Iterator object is obtained using iterator() method Iterator it = linkedList.iterator(); // To iterate through the elements of the collection we can use hasNext() and next() methods of Iterator System.out.println("LinkedList elements :"); while(it.hasNext())System.out.println(it.next()); }} |
Output:
LinkedList elements :
element_1
element_2
element_3
element_4
element_5
This was an example of how to obtain a LinkedList Iterator in Java.
