Java Program to Access elements from a LinkedList

JavaCampus InterviewServer Side ProgrammingProgramming

In this article, we will understand how to access elements from a linked-list. The java.util.LinkedList class operations perform we can expect for a doubly-linked list. Operations that index into the list will traverse the list from the beginning or the end, whichever is closer to the specified index.

Below is a demonstration of the same −

Suppose our input is

Input list: [Python, Java, Scala, Java, JavaScript]

The desired output would be

The element at index 3 is: Java

Algorithm

Step 1 - START
Step 2 - Declare a linked list namely input_list.
Step 3 - Define the values.
Step 4 - Using the built-in function get(), we can access any specific element of the linked list by passing the index value to the function.
Step 5 - Display the result
Step 6 - Stop

Example 1

Here, we bind all the operations together under the ‘main’ function.

import java.util.LinkedList;
public class Demo {
   public static void main(String[] args) {
      LinkedList<String> input_list = new LinkedList<>();
      input_list.add("Python");
      input_list.add("Java");
      input_list.add("Scala");
      input_list.add("Java");
      input_list.add("JavaScript");
      System.out.println("The list is defined as: " + input_list);
      String result_string = input_list.get(3);
      System.out.print("The element at index 3 is: " + result_string);
   }
}

Output

The list is defined as: [Python, Java, Scala, Java, JavaScript]
The element at index 3 is: Java

Example 2

Here, we encapsulate the operations into functions exhibiting object oriented programming.

import java.util.LinkedList;
public class Demo {
   static void get_element(LinkedList<String> input_list, int index){
      String result_string = input_list.get(index);
      System.out.print("The element at index 3 is: " + result_string);
   }
   public static void main(String[] args) {
      LinkedList<String> input_list = new LinkedList<>();
      input_list.add("Python");
      input_list.add("Java");
      input_list.add("Scala");
      input_list.add("Java");
      input_list.add("JavaScript");
      System.out.println("The list is defined as: " + input_list);
      int index = 3;
      get_element(input_list, index);
   }
}

Output

The list is defined as: [Python, Java, Scala, Java, JavaScript]
The element at index 3 is: Java
raja
Updated on 29-Mar-2022 12:54:08

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