Sumityadav

Sumityadav

How to get the first and last occurrence of the specified elements in a linked list in Java?

Hello all, I am new to learning Java Programming and want to learn java from scratch. I was writing a Java program to get the first and last occurrence of the specified elements in a linked list. Here is the Code:

import java.util.LinkedList;
import java.util.Iterator;
  public class program {
  public static void main(String[] args) {
    // create an empty linked list
     LinkedList<String> l_list = new LinkedList<String>();
   // use add() method to add values in the linked list
          list.add("Red");
          ist.add("Green");
          list.add("Black");
          list.add("Pink");
          list.add("orange");
      
      // print original list
   System.out.println("Original linked list:" + list);  
 
   // Find first element of the List
    Object first_element = list.getFirst();
    System.out.println("First Element is: "+first_element);
 
    // Find last element of the List
    Object last_element = list.getLast();
    System.out.println("Last Element is: "+ element);
 }
}

When I was trying to run the code I shows and error, I do not understand how to solve this. can any one please help in in this?

Marked As Solved

faust

faust

There are a few typing errors in your code, for example " ist.add(“Green”);" instead of “list.add(“Green”);”

And System.out.println("Last Element is: "+ element); should be System.out.println("Last Element is: "+ last_element);

with these changes your code shall run correctly.

Besides, it’s important to note that in Java we use cammelCase instead of snake_case, you should use firstElement and lastElement instead of first_element and last_element, this won’t affect the code but is the common pattern used by the vast majority of the Java Developers, so it’s better to follow it too.

Where Next?

Popular Backend topics Top

chasekaylee
Hi there everyone! Recently, I have fallen in love with programming with Elixir and have been having so much fun with it. I have been do...
New
Jsdr3398
I’m trying to create a router where everything is in a collection of routes (similar to how I do my routes in expressjs). But it doesn’t ...
New
Jsdr3398
I’ve been working on and rewriting my messaging platform several times for the past two years. With Discords new rebranding, it has reall...
New
TwistingTwists
Hello Folks, I am a novice developer from India. Intending to learn Elixir and web apps (phoenix framework). What are things that I MUS...
New
AstonJ
If when trying to create (or recreate) your dev db with rails db:create you are getting: PG::ConnectionBad: connection to server on soc...
New
sona11
I studied very basic PHP (I believe). After that, I feel like I’ve gotten a handle on the language. My dream is to work as a web develope...
New
harwind
In C, how they are different? char str[] = "xyz"; // statement //and char str[4] = "xyz"; // statement The first, i...
/c
New
Fl4m3Ph03n1x
Background I have an umbrella project, where I run mix test from the root. In one of the apps, I am mocking the File module using the Mo...
New
yamuna
Hi everyone, I’m trying to run deepseek-coder:6.7b-instruct-q4_K_M in Docker using Ollama to create an LLM that will be used by CrewAI a...
New
apoorv-2204
Anyone know how to get in golang? I am from elixir background?.
New

Other popular topics Top

Devtalk
Reading something? Working on something? Planning something? Changing jobs even!? If you’re up for sharing, please let us know what you’...
1033 17470 383
New
New
AstonJ
Inspired by this post from @Carter, which languages, frameworks or other tech or tools do you think is killing it right now? :upside_down...
New
rustkas
Intensively researching Erlang books and additional resources on it, I have found that the topic of using Regular Expressions is either c...
New
AstonJ
Biggest jackpot ever apparently! :upside_down_face: I don’t (usually) gamble/play the lottery, but working on a program to predict the...
New
foxtrottwist
A few weeks ago I started using Warp a terminal written in rust. Though in it’s current state of development there are a few caveats (tab...
New
PragmaticBookshelf
Author Spotlight Rebecca Skinner @RebeccaSkinner Welcome to our latest author spotlight, where we sit down with Rebecca Skinner, auth...
New
PragmaticBookshelf
Author Spotlight: Peter Ullrich @PJUllrich Data is at the core of every business, but it is useless if nobody can access and analyze ...
New
sir.laksmana_wenk
I’m able to do the “artistic” part of game-development; character designing/modeling, music, environment modeling, etc. However, I don’t...
New
RobertRichards
Hair Salon Games for Girls Fun Girls Hair Saloon game is mainly developed for kids. This game allows users to select virtual avatars to ...
New