Remove first and last element from a linked list.  ****Java*****

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Remove first and last element from a linked list.  ****Java*****

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Step 1

There is a predefined class or package in java that is  java.util.LinkedList. This package have methods to remove first and last element in linked list that are removeFirst() and removeLast().

Program to remove first and last element in java :- 

import java.util.LinkedList;
  
public class Linklis 
{
    public static void main (String[] args) {
        
        // Here we are creating linked list that is "lt"
        LinkedList<String> lt = new LinkedList<String>();
  
        // add() method is used to insert or add elements in linked list
        lt.add("My");
        lt.add("Name");
        lt.add("is");
        lt.add("Jack");
        lt.add("John");
  
        // Printing the list
        System.out.println("LinkedList:\t" + lt);
        
          
        // Removing first element or head First list using removeFirst() method
        System.out.println("Removing the First element :\t" + lt.removeFirst());
        
        // Now the list after removing first element
        System.out.println("Now the list elements are :\t" + lt);
  
        // Removing Last element or tail of list using removeLast() method
        System.out.println("Removing the Last element :\t" + lt.removeLast());
          
  
        // Now the list after removing Last element
        System.out.println("Now the list elements are :\t" + lt);
    }
}

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