Linked List to Add and Remove Element

Here is a Java Program to Demonstrate the Linked List.

import java.util.*;

class LinkedListDemo {
  public static void main(String args[]) {
    // create a linked list
    LinkedList ll = new LinkedList();
    
    // add elements to the linked list
    ll.add("F");
    ll.add("B");
    ll.add("D");
    ll.add("E");
    ll.add("C");
    ll.addLast("Z");
    ll.addFirst("A");

    ll.add(1, "A2");

    System.out.println("Original contents of ll: " + ll);

    // remove elements from the linked list
    ll.remove("F");
    ll.remove(2);

    System.out.println("Contents of ll after deletion: "
                       + ll);

    // remove first and last elements
    ll.removeFirst();
    ll.removeLast();

    System.out.println("ll after deleting first and last: "
                       + ll);

    // get and set a value
    Object val = ll.get(2);
    ll.set(2, (String) val + " Changed");

    System.out.println("ll after change: " + ll);
  }
}

Output of Above Java Program
Original contents of ll: [A, A2, F, B, D, E, C, Z]
Contents of ll after deletion: [A, A2, D, E, C, Z]
ll after deleting first and last: [A2, D, E, C]
ll after change: [A2, D, E Changed, C]