Answers for "performing linked list in java taking pointers"

performing linked list in java taking pointers

package com.beginnersbook;
import java.util.*;
public class JavaExample{
   public static void main(String args[]){

     LinkedList<String> list=new LinkedList<String>();

     //Adding elements to the Linked list
     list.add("Steve");
     list.add("Carl");
     list.add("Raj");

     //Adding an element to the first position
     list.addFirst("Negan");

     //Adding an element to the last position
     list.addLast("Rick");

     //Adding an element to the 3rd position
     list.add(2, "Glenn");

     //Iterating LinkedList
     Iterator<String> iterator=list.iterator();
     while(iterator.hasNext()){
       System.out.println(iterator.next());
     }
   } 
}

performing linked list in java taking pointers

import java.util.*;
public class LinkedListExample {
     public static void main(String args[]) {

       /* Linked List Declaration */
       LinkedList<String> linkedlist = new LinkedList<String>();

       /*add(String Element) is used for adding 
        * the elements to the linked list*/
       linkedlist.add("Item1");
       linkedlist.add("Item5");
       linkedlist.add("Item3");
       linkedlist.add("Item6");
       linkedlist.add("Item2");

       /*Display Linked List Content*/
       System.out.println("Linked List Content: " +linkedlist);

       /*Add First and Last Element*/
       linkedlist.addFirst("First Item");
       linkedlist.addLast("Last Item");
       System.out.println("LinkedList Content after addition: " +linkedlist);

       /*This is how to get and set Values*/
       Object firstvar = linkedlist.get(0);
       System.out.println("First element: " +firstvar);
       linkedlist.set(0, "Changed first item");
       Object firstvar2 = linkedlist.get(0);
       System.out.println("First element after update by set method: " +firstvar2);

       /*Remove first and last element*/
       linkedlist.removeFirst();
       linkedlist.removeLast();
       System.out.println("LinkedList after deletion of first and last element: " +linkedlist);

       /* Add to a Position and remove from a position*/
       linkedlist.add(0, "Newly added item");
       linkedlist.remove(2);
       System.out.println("Final Content: " +linkedlist); 
     }
}