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About Byron Kiourtzoglou

Byron Kiourtzoglou
Byron is a master software engineer working in the IT and Telecom domains. He is an applications developer in a wide variety of applications/services. He is currently acting as the team leader and technical architect for a proprietary service creation and integration platform for both the IT and Telecom industries in addition to a in-house big data real-time analytics solution. He is always fascinated by SOA, middleware services and mobile development. Byron is co-founder and Executive Editor at Java Code Geeks.

LinkedList Iterator example

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 hasNext() and next() methods of Iterator,

as described in the code snippet below.
 

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.

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