Java Collections Tutorial

[@nicolai9595]

Somehow you manage to make videos that fit just along side my curriculum of coding for beginners in my computer science degree. Really nicely explained, and helps me grasp the concept better! Thanks Mosh

[@saibalmukherjee6990]

'Mosh' means buffalo in bengali! Thank you so much sir for helping us so much ! i am a kid learning python from your online course and enjoying it as well!

[@saibalmukherjee6990]

who liked just now?

[@hasin9669]

আমিও বাঙালি!

[@saibalmukherjee6990]

@@hasin9669 oo😄

[@makjunior4558]

Mosh doesn't mean buffalo in Bengali.... It's "mohish"

[@saibalmukherjee6990]

@@makjunior4558 same...🤗

[@bunyyilmaz7646]

- [00:33] 📚 Java Collections Framework Overview - Overview of the Java Collections Framework hierarchy: interfaces represented by green boxes and classes by blue boxes. - Hierarchy breakdown: `Iterable` interface, `Collection` interface, and sub-interfaces (`List`, `Queue`, `Set`) with added functionalities. - Explanations on common operations declared in the `Collection` interface and their significance. - [03:37] 🎶 Iterable Interface's Purpose and Problem Resolution - Understanding the `Iterable` interface: its place in Java, functionality for iteration over objects. - Demonstrating a problem with iterating over a generic list, highlighting issues with exposing internal implementations. - Analogies with remote controls and encapsulation in object-oriented programming. - [07:41] 🔍 Benefits of Implementing the Iterable Interface - Exploring the benefits of implementing the `Iterable` interface: independence from internal implementations. - Details on the `Iterator` interface and its role in simplifying iteration over collections. - Demonstrating the conversion of a for-each loop into iterator operations via Java compilation. - [09:02] 🧩 Implementing the Iterator Interface - Step-by-step implementation of the `Iterator` interface within the `GenericList` class. - Construction of a private nested class, `ListIterator`, and methods (`hasNext`, `next`) for iteration control. - Enabling iteration over a generic list without exposing its internal structure. - [13:06] 📦 Collection Interface Introduction - Introduction to the `Collection` interface: its representation as a container for objects. - Explanation of essential operations (`add`, `remove`, `contains`, etc.) declared in the `Collection` interface. - Insight into extending the `Iterable` interface and common implementations like `ArrayList`. - [20:00] 📂 Demonstrating Collection Interface Operations - Implementation examples using the `Collection` interface within the `CollectionsDemo` class. - Methods for adding, iterating, removing, checking existence, and converting collections to arrays. - Utilizing utility methods like `addAll`, `size`, `clear`, and others within the `Collection` interface. - [23:50] 📚 Converting Collection to String Array - Converting a collection to a string array allows access to string methods. - Utilizing `collection.toArray()` with a specified array type permits access to string methods easily. - Utilizing `var` simplifies code readability despite arguments against its usage due to clarity in object type identification. - [25:40] 🔍 Comparing Collections - Comparing two collections for equality using `collection.equals(other)` compares their memory references. - Checking for identical content between collections is done through `collection.equals(other)` method, which compares their actual content. - [28:02] 📋 Exploring List Interface - The List interface manages ordered collections where accessing objects by index is crucial. - List operations include adding, inserting, retrieving by index, and removing items at specific indices. - Features such as `list.subList()` provide functionality to obtain a sublist from a List. - [30:27] 🔍 Using List Interface Methods - Methods like `list.remove(index)` in List interface allow removal by specific index, a feature absent in general collections. - `list.indexOf()` and `list.lastIndexOf()` determine the first and last indices of an element, respectively, aiding in search operations. - The `list.subList(from, to)` method extracts a section of the list between two specified indices. Made with HARPA AI

[@its_msCool]

thank u

[@steinbeats]

Be blessed Mosh Plus everyone else learning code through Mosh

[@insighted6856]

This is exactly what I needed to learn next! Thanks so much Mosh! 😁

[@MrCrackheadst]

I started the video asking myself why i couldnt use the for each with the genericList. i start stackoverflowding not getting a good answer. little did i know the whole purpose of the video was explaning exactly that 🤣. Your way of teaching is very intuitive. i usually use your videos to understand and then complement with books once i do understand to get the intricacies of each topic.

[@anu8590]

enjoy java with mosh☕

[@mohanbabu.d]

Thank you mosh Ur Videos are good 👍

[@pavaniduvvuri6099]

I am a big fan of mosh because of him i learnt python free that's happy

[@orisit9038]

Hi Mosh, Thank you for all the tutorials especially C#, i just finished your whole course on MVC 5. Please make also a Course on WPF C#, you have the best teaching method and style here in YT, so clear and precise and whats great is it is for real world scenarios as i just got hired as a 'no experience' developer and these tutorials helped me a lot. Thanks again and God Bless you and your family. 🙏

[@longkesh1971]

Thank you for making this video. Your examples are clear and easy to understand.

[@TecICTian]

A great flow and good explanation to understand the lesson clearly...

[@bharat_thapa_]

*I would like to know about your next course details*

[@gerenzoz]

Mosh you are great guy whic macbook you use

[@aces8481]

uncanny timing - badly needed this one and couldn't have come from a better teacher :)

[@johaneluttig9311]

Our curriculum is purely based on Delphi... I have learned a lot from all of your other videos for hobbies and now I know who to ask when I really need help! knowing that our country's public schools (and I believe most other schools) has a but of a struggle when it comes to teaching these kinds of things, would you be able to help us; at least with the basics?

[@bubakrSiddiq]

You are absolutely very good teacher and programmmer.

[@dembro27]

I'm learning and using Java 8, but I wish I had that var keyword!! Nice video, thanks.

[@bensl3308]

Really great video.

[@svetlanamazhaykina6918]

Thanks for your work, Mosh! Well done!

[@alirezavalikhani7232]

That was great.داداش دمت گرم

[@umairnaveed2075]

Sir kindly make a video that complete react js course in latest version like functional components

[@erichopeprince5867]

Thank you for this, please touch on advanced java as a course. Thank you

[@azaih]

Excellent video, thank you

[@UmerFarooq-vk9be]

After seeing kotlin syntax i think java is still clear and straight forward

[@KTechy-]

Great video ❤

[@leqalcoding1066]

I've learnt more than alot from your videos please!! can you do a video on Open3d python?!🙏🙏🙏🙏

[@CodeJava]

the video title is misleading. This video just scratches the surface of Java Collections. Thanks anyway.

[@SHOURYAAAA]

This guy is great.

[@皇甫少華]

When will the spring boot course be released？

[@abhishekgupta7675]

mosh please make a course on spring boot

[@CharlotteGreen-rc3my]

good explanation

[@darren15]

Why would I use "collection collection = new ArrayList()" when I could use the class that implement the collections like "ArrayList alist= new ArrayList(); " ? Would benefit does it provide to use the collection? I guess I missed it in the video. LOL

[@adamsantana4278]

I was wondering the same thing, but if we need to create an ArrayList I think is better to use the List interface. List list = new ArrayList(); This way if later we need to change the list to another type of list, like a LinkedList, we can do it.

[@kookie3878]

Hi mosh could u plz once again give access to discount of yearly package on your courses I was unable at that time to pay.

[@umarani4657]

Java is a best of millions of the world 🌎 by the way to

[@AugustLiljegren_]

Thank you so much❤

[@xxbossxx_king9383]

Make a course of Dart programming language ❤️

[@androidprojects2706]

Hello Mosh, your videos has took me far in programming, pls.. I have some problem, my last comment you didn't reply for about three weeks now... How can I reach you so I can drive my questions to you personally rather than here ?

[@khesrawsalehi294]

Please do java multithreading and java socket programming please

[@alexandergarciacastaneda9189]

hello, would you consider to upload your courses to udemy?

[@amitnagdev5111]

Mosh, i'm grateful for the content you uploaded on the youtube for free of cost.But one thing that i would like to address is that the pricing of the paid course is minimal according to U.S., but not for the asian community following you. So on behalf of all of them i request you to please consider differential pricing if possible.

[@naufaladi.youtube]

yes, price localisation would be great (For perspective, the minimum wage in Indonesia capital city is less than $350 USD per month, or about $4200 yearly)

[@superboy3625]

Hello sir pls make a full course video on git .

[@blouisuba2647]

Mosh can you go check your data structure and algorithms course part 2 & 3 is redirecting Back to homepage

[@v.k.5056]

Sir, can you make a tutorial video on Golang pls

[@DaiMoscv]

Why are you using var as variable instead of the types?

[@fifaham]

Thank you dnldd

[@jesiotra6246]

ich bought a mastery course , but i can't find it in it. Could you say in with part and time exactly it is?

[@AmitKumar-mz2jg]

Can we learn python in place of JavaScript?

[@GeeksForCode511]

Why not do a course on a programming language C++?

[@saraayub171]

Hi mosh sir

[@markosmuche4193]

Are you ethiopian?

[@Кукусик-е2э]

Sorry, but code at 4:55 doesn't work. While it shows no errors, when trying to run it, I get: Exception in thread "main" java.lang.ClassCastException 🤷‍♀️

[@yassfeealbaloushi2310]

hey mosh ,how are you doing? i have a question about your paid courses..so if I subscribe for a monthly payment and enrolled in a course , and the month have passed without me completing the course..will I still be able to get to that course without subscribing for another month? please give me an answer :))

[@olowojobabankole4671]

I like mosh ally but this video made collections more complicated than it is

[@rudolfmukhammadiev3117]

Please mosh can you create new node course 🙏

[@queryhub5151]

Sir hi How to write code I am developing seo tools website using rapid api. But how to take user input in api url ? I mean user enter something in search bar then get data by rapid api. Please help me sir

[@aditisharma3948]

what is var ? a data type?

[@saraayub171]

Are you from America

[@ncertsimplified1491]

Hi Sara. How are you.

[@blouisuba2647]

Mosh how can I have a one on one conversation with you.

[@prashantkumar-kl2ku]

What about flutter course

[@nilesh6929]

Start a course on Android app development

[@rezahajitarkhani7788]

سلام خیلی عالی بود

[@RedRebel8]

Too many ads - it kills your concentration.

[@udaysriramula8148]

What is web 3

[@xRajaw]

I was doing leetcode and some of the problems require arraylist, hashset. I thought watching a tutorial will make things work. But after seeing this tutorial i didn't get anything at all. What really happening and how things are sticking together. More learning needs to be done!

[@almanduku9043]

I didn't like it, completely not practical you tell that

[@abeerizar5337]

شرح حيل عميق مومال مبتدئين

[@asktostranger8296]

Make your all paid courses free , then see the magic

[@saraayub171]

Hi

[@erfan_ops]

Are you iranian?

[@gutufida4641]

What is 'var' in java?

[@comradeishaan89604]

Ishaan

[@theaftermath98]

your videos are not good for beginners, many be people who know something a bout java but for an absolute beginner will always have loop holes in the understanding, but anyway thanks

[@adityabiswal5506]

202nd view.

[@alexkart]

Обращаюсь к российским айтишникам. У вас забирают лучшие года жизни. kzbin.info/www/bejne/qquvhJmNfNFqbKM

[@mohammadimran9471]

I need your GMail address. because i need a business app

[@komuoirish7396]

Sir please, give me your email 🙏