public class LinkedList extends AbstractSequentialList implements List, Deque, Cloneable, Serializable

import java.util.*;
public class LinkedList1{
 public static void main(String args[]){

  LinkedList al=new LinkedList();
  al.add("Ravi");
  al.add("Vijay");
  al.add("Ravi");
  al.add("Ajay");

  Iterator itr=al.iterator();
  while(itr.hasNext()){
   System.out.println(itr.next());
  }
 }
}

Output: Ravi
       Vijay
       Ravi
       Ajay

import java.util.*;
public class LinkedList2{
 public static void main(String args[]){
 LinkedList ll=new LinkedList();
   System.out.println("Initial list of elements: "+ll);
   ll.add("Ravi");
   ll.add("Vijay");
   ll.add("Ajay");
   System.out.println("After invoking add(E e) method: "+ll);
   //Adding an element at the specific position
   ll.add(1, "Gaurav");
       System.out.println("After invoking add(int index, E element) method: "+ll);
       LinkedList ll2=new LinkedList();
       ll2.add("Sonoo");
   ll2.add("Hanumat");
   //Adding second list elements to the first list
   ll.addAll(ll2);
   System.out.println("After invoking addAll(Collection c) method: "+ll);
       LinkedList ll3=new LinkedList();
       ll3.add("John");
   ll3.add("Rahul");
   //Adding second list elements to the first list at specific position
   ll.addAll(1, ll3);
   System.out.println("After invoking addAll(int index, Collection c) method: "+ll);
       //Adding an element at the first position
   ll.addFirst("Lokesh");
   System.out.println("After invoking addFirst(E e) method: "+ll);
   //Adding an element at the last position
       ll.addLast("Harsh");
       System.out.println("After invoking addLast(E e) method: "+ll);
   
 }
}

Initial list of elements: []
After invoking add(E e) method: [Ravi, Vijay, Ajay]
After invoking add(int index, E element) method: [Ravi, Gaurav, Vijay, Ajay]
After invoking addAll(Collection c) method: 
[Ravi, Gaurav, Vijay, Ajay, Sonoo, Hanumat]
After invoking addAll(int index, Collection c) method: 
[Ravi, John, Rahul, Gaurav, Vijay, Ajay, Sonoo, Hanumat]
After invoking addFirst(E e) method: 
[Lokesh, Ravi, John, Rahul, Gaurav, Vijay, Ajay, Sonoo, Hanumat]
After invoking addLast(E e) method: 
[Lokesh, Ravi, John, Rahul, Gaurav, Vijay, Ajay, Sonoo, Hanumat, Harsh]

import java.util.*;
public class LinkedList3 {

    public static void main(String [] args)
    {
       LinkedList ll=new LinkedList();
   ll.add("Ravi");
   ll.add("Vijay");
   ll.add("Ajay");
   ll.add("Anuj");
   ll.add("Gaurav");
   ll.add("Harsh");
   ll.add("Virat");
   ll.add("Gaurav");
   ll.add("Harsh");
   ll.add("Amit");
   System.out.println("Initial list of elements: "+ll);
 //Removing specific element from arraylist
      ll.remove("Vijay");
      System.out.println("After invoking remove(object) method: "+ll); 
 //Removing element on the basis of specific position
      ll.remove(0);
      System.out.println("After invoking remove(index) method: "+ll); 
      LinkedList ll2=new LinkedList();
      ll2.add("Ravi");
      ll2.add("Hanumat");
 // Adding new elements to arraylist
      ll.addAll(ll2);
      System.out.println("Updated list : "+ll); 
 //Removing all the new elements from arraylist
      ll.removeAll(ll2);
      System.out.println("After invoking removeAll() method: "+ll); 
 //Removing first element from the list
      ll.removeFirst();
      System.out.println("After invoking removeFirst() method: "+ll);
  //Removing first element from the list
      ll.removeLast();
      System.out.println("After invoking removeLast() method: "+ll);
  //Removing first occurrence of element from the list
      ll.removeFirstOccurrence("Gaurav");
      System.out.println("After invoking removeFirstOccurrence() method: "+ll);
  //Removing last occurrence of element from the list
      ll.removeLastOccurrence("Harsh");
      System.out.println("After invoking removeLastOccurrence() method: "+ll);

      //Removing all the elements available in the list     
      ll.clear();
      System.out.println("After invoking clear() method: "+ll); 
   }
}                 

Initial list of elements: [Ravi, Vijay, Ajay, Anuj, Gaurav, Harsh, Virat, Gaurav, Harsh, Amit]
After invoking remove(object) method: [Ravi, Ajay, Anuj, Gaurav, Harsh, Virat, Gaurav, Harsh, Amit]
After invoking remove(index) method: [Ajay, Anuj, Gaurav, Harsh, Virat, Gaurav, Harsh, Amit]
Updated list : [Ajay, Anuj, Gaurav, Harsh, Virat, Gaurav, Harsh, Amit, Ravi, Hanumat]
After invoking removeAll() method: [Ajay, Anuj, Gaurav, Harsh, Virat, Gaurav, Harsh, Amit]
After invoking removeFirst() method: [Gaurav, Harsh, Virat, Gaurav, Harsh, Amit]
After invoking removeLast() method: [Gaurav, Harsh, Virat, Gaurav, Harsh]
After invoking removeFirstOccurrence() method: [Harsh, Virat, Gaurav, Harsh]
After invoking removeLastOccurrence() method: [Harsh, Virat, Gaurav]
After invoking clear() method: []

import java.util.*;
public class LinkedList4{
 public static void main(String args[]){

  LinkedList ll=new LinkedList();
   ll.add("Ravi");
   ll.add("Vijay");
   ll.add("Ajay");
   //Traversing the list of elements in reverse order
   Iterator i=ll.descendingIterator();
   while(i.hasNext())
   {
   System.out.println(i.next());
   }
   
 }
}

Output: Ajay
Vijay
Ravi

import java.util.*;
class Book {
int id;
String name,author,publisher;
int quantity;
public Book(int id, String name, String author, String publisher, int quantity) {
this.id = id;
this.name = name;
this.author = author;
this.publisher = publisher;
this.quantity = quantity;
}
}
public class LinkedListExample {
public static void main(String[] args) {
//Creating list of Books
List list=new LinkedList();
//Creating Books
Book b1=new Book(101,"Let us C","Yashwant Kanetkar","BPB",8);
Book b2=new Book(102,"Data Communications & Networking","Forouzan","Mc Graw Hill",4);
Book b3=new Book(103,"Operating System","Galvin","Wiley",6);
//Adding Books to list
list.add(b1);
list.add(b2);
list.add(b3);
//Traversing list
for(Book b:list){
System.out.println(b.id+" "+b.name+" "+b.author+" "+b.publisher+" "+b.quantity);
}
}
}

101 Let us C Yashwant Kanetkar BPB 8
102 Data Communications & Networking Forouzan Mc Graw Hill 4
103 Operating System Galvin Wiley 6