How to get the first and the last element of a linked list in Java

Problem Description

How to get the first and the last element of a linked list?

Solution

Following example shows how to get the first and last element of a linked list with the help of linkedlistname.getFirst() and linkedlistname.getLast() of LinkedList class.

import java.util.LinkedList;

public class Main {
   public static void main(String[] args) {
      LinkedList<String> lList = new LinkedList<String>();
      lList.add("100");
      lList.add("200");
      lList.add("300");
      lList.add("400");
      lList.add("500");
      System.out.println("First element of LinkedList is : " + lList.getFirst());
      System.out.println("Last element of LinkedList is : " + lList.getLast());
   }
}

Result

The above code sample will produce the following result.

First element of LinkedList is :100
Last element of LinkedList is :500

The following is an another example to get the first and the last element of a linked list

import java.util.LinkedList;

public class Demo {
   public static void main(String[] args) {
      LinkedList lList = new LinkedList();
      lList.add("1");
      lList.add("2");
      lList.add("3");
      lList.add("4");
      lList.add("5");
      System.out.println("First element is : " + lList.getFirst());
      System.out.println("Last element is : " + lList.getLast());
   }
}

The above code sample will produce the following result.

First element is : 1
Last element is : 5