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Java Program to Access elements from a LinkedList
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
Updated on: 29-Mar-2022
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