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Gaurav Kukade
Gaurav Kukade Hi 👋🏼 I'm Gaurav Kukade, a software developer. I write tutorials for Java programming language and related technologies.

How To Get An Element From LinkedList?

In this tutorial, we will see how to get an element from the LinkedList. LinkedList class provides avrious methods to get an element from the LinkedList. Let’s see this method with example.

Introduction

LinkedList class is present in the java.util package.

LinkedList internally uses a doubly linkedlist for storing the variables. That’s why LinkedList is preferred when our frequent operation is insertion and deletion.

LinkedList class provides following method to an element from the list.

  1. get(int index)
  2. getFirst()
  3. getLast()

1. get(int index)

The get(int index) method returns the element at the specified position (index) in this list.

The method signature is as given below.

1

public E get(int index)

This method accepts a parameter index of type int, an index of the element that needs to be returned.

I have given a java program below to get an element from the LinkedList using the get(int index) method.

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import java.util.LinkedList;

/**
 * A Java program to get an element from
 * the linkedlist by it's index.
 * 
 * @author coderolls.com
 */
public class LinkedListGetElement {

	public static void main(String[] args) {
		
		LinkedList<String> linkedList = new LinkedList<String>();
		linkedList.add("Adidas");
		linkedList.add("Air");
		linkedList.add("Nike");
		linkedList.add("Puma");
		linkedList.add("Reebok");
		
		System.out.println("LinkedList: ");
		System.out.println(linkedList);
		
		// get element at index 3
		String element = linkedList.get(3); // Puma
		
		System.out.println("\nElement at index 3 is "+ element);
	}
}

Output:

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LinkedList: 
[Adidas, Air, Nike, Puma, Reebok]

Element at index 3 is Puma

2. getFirst()

This method returns the first element in this list.

The method signature is as given below.

1

public E getFirst()

This method do not accepts an parameter.

I have given a java program to get an element form the LinkedList using getFirst() method.

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import java.util.LinkedList;

/**
 * A Java program to get the first element from
 * the linkedlist using getFirst() method.
 * 
 * @author coderolls.com
 */
public class LinkedListGetFirst {

	public static void main(String[] args) {
		
		LinkedList<String> linkedList = new LinkedList<String>();
		linkedList.add("Adidas");
		linkedList.add("Air");
		linkedList.add("Nike");
		linkedList.add("Puma");
		linkedList.add("Reebok");
		
		System.out.println("LinkedList: ");
		System.out.println(linkedList);
		
		// get first element
		String element = linkedList.getFirst(); // Adidas
		
		System.out.println("\nFirst element of the linkedList is: "+ element);
	}
}

Output:

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LinkedList: 
[Adidas, Air, Nike, Puma, Reebok]

First element of the linkedList is: Adidas

3. getLast()

This method returns the last element in this list.

The method signature is as given below.

1

public E getLast()

This method do not accepts an parameter.

I have given a java program to get an element form the LinkedList using getFirst() method.

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import java.util.LinkedList;

/**
 * A Java program to get the last element of
 * the linkedlist using getLast() method.
 * 
 * @author coderolls.com
 */
public class LinkedListGetLast {

	public static void main(String[] args) {
		
		LinkedList<String> linkedList = new LinkedList<String>();
		linkedList.add("Adidas");
		linkedList.add("Air");
		linkedList.add("Nike");
		linkedList.add("Puma");
		linkedList.add("Reebok");
		
		System.out.println("LinkedList: ");
		System.out.println(linkedList);
		
		// get first element
		String element = linkedList.getLast(); // Adidas
		
		System.out.println("\nLast element of the linkedList is: "+ element);
	}
}

Output:

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LinkedList: 
[Adidas, Air, Nike, Puma, Reebok]

Last element of the linkedList is: Reebok

Conclusion

LinkedList class provides following method to get an element from the LinkedList.

  1. get(int index)

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    // get element at index 3
String element = linkedList.get(3);

  2. getFirst()

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    // get first element
String element = linkedList.getFirst();

  3. getLast()

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    // get last element
String element = linkedList.getLast();

The example java programs given in the above tutorial can be found at this GitHub Repository.

Let me know you thoughts or suggestions on the topic discussed above in comment section below.

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