How to create LinkedList in Java

In previous tutorials We have learn about LinkedList in java . We have given different java linkedlist example  and explain about how to Linkedlist works , declaration of Linkedlist and difference between array and LinkedList .  if you are new in Linkedlist then i recommended to you first read this article one LinkedList class in java . In this post we will learn about how can we create LinkedList in java. We have two constructor of LinkedList in java as following .

  • LinkedList() – Constructs an empty list.
  • LinkedList(Collection<? extends E> c) – Constructs a list containing the elements of the given collection, in the order they are returned by the collection’s iterator.

Now will create LinkedList using these constructor , Let’s see this by code.

import java.util.ArrayList;
import java.util.LinkedList;

public class CreateLinkList {

	public static void main(String[] args) {

		/*
		 * Constructs an empty list.
		 */
		LinkedList<String> linkedList = new LinkedList<String>();

		//adding element in linkedlist
		
		linkedList.add("PHP");
		linkedList.add("JAVA");
		linkedList.add("C++");
		linkedList.add("Android");

		//print linkedlist
		System.out.println("Linklist is =" + linkedList);

		ArrayList<String> arrayList = new ArrayList<String>();
		arrayList.add("sumsung");
		arrayList.add("noika");
		arrayList.add("spice");
		
		/*
		 * Constructs a list containing the elements of the specified collection, 
		 * in the order they are returned by the collection's iterator.
		 */
		LinkedList<String> linkedListFromCollection = new LinkedList<>(arrayList);
		
		//print linkedlist
		System.out.println("linkedlist is ="+ linkedListFromCollection);
		
	}

}

Output :

Linklist is =[PHP, JAVA, C++, Android]
linkedlist is =[sumsung, noika, spice]

A Guide To LinkedList

References

Java Docs- LinkedList

 

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