Optionals In Java - Simple Tutorial

Full tutorial on Optionals in Java!
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Optionals were added in Java 8, but can be a confusing thing to learn. This tutorial will walk through all of the aspects of Optionals in Java detail, then walk through step by step when and how to use optionals in your own code!
If you're confused by Optionals in Java, either just what they are and why they exist in general, or how to code to use them in Java, you're in the right place!
Learn or improve your Java by watching it being coded live!
Hi, I'm John! I'm a Lead Java Software Engineer and I've been in the programming industry for more than a decade. I love sharing what I've learned over the years in a way that's understandable for all levels of Java learners.
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[@stevenschelling8452]

This is the gold standard of coding tutorials, thanks for such well-structured info

[@iamarnabpal]

Seriously... Pure GOLD!

[@YatiAcharya]

You know how I am certain this is the best Java channel? I have no interviews to crack, I have no exams to clear and I'm still here learning because it just is explained in such an interesting, problem-solution kinda way. Brilliant work, John!

[@Amitjha406]

Agreed

[@BryanChance]

Yes, I second that. This is the best Java channel. :)

[@nikamz6077]

My coding exam is in just about a month - and I would like to thank you, John! You have helped me so much. If I pass, thats because of you. Love your channel! Greetings from germany. :)

[@nikamz6077]

Update: I passed. 😍💪🏻

[@celeryman1650]

Congrats!!

[@CodingWithJohn]

Great to hear! Congrats!

[@user-nu6vz9pt8g]

@@nikamz6077 Congrats!

[@ItIsJan]

​@@nikamz6077gut gemacht!

[@juanantoniosicardocontrera8390]

It's very difficult to find such well explained, well paced and easy to understand coding tutorials on youtube, thanks and congrats for having such good content.

[@adrianfiedler3520]

Always wondered what the true benefit of optionals vs null checks is. This really cleared things up for me!

[@gulbalasalamov1367]

Love the cat example and box metaphor! :) 4:45

[@LightningLion500]

I just started watching your channel and I love your calm and reassuring way of explaining complex coding aspects! It motivated me to work a little harder on my own projects, unlike the often condescending explainations of the teachers at my university. Thanks John!

[@cloyyd2227]

i just started my internship for the summer and the code they have us working with has a ton of optionals, which was something i had never heard of. You’re videos are truly always a highlight to my day and explain it so neatly and concisely, not to mention the timing! please keep doing what you do

[@MariaBose-ky9jf]

I love your channel for the calm and precise manner you describe things with - and also the nerdy references ahah

[@gerdsfargen6687]

So good..guys, just keep coming back to John's channel. He explains everything with the greatest of ease.

[@RsZ789]

Great job, John. Can you please cover logging and best practices for it?

[@chinmayrath8494]

please keep blessing us with such non trivial concepts. much love !!

[@sg4644]

I've a exam on Java tomorrow and I've to say your videos on Java are probably the best on KZbin. Will be binge watching the your entire Java playlist tonight.

[@christianolsson8644]

What an excellent video! I have studied Java but not worked with it and now I try to polish my knowledge to get a job in Java. I want to thank you for your easy to understand and amazing videos that take up very important and interesting topics. You're an amazing teacher and you get excited to learn more to look at your videos :)

[@midhunmadhu5305]

I don't usually comment on any youtube videos. But here John, You are doing an excellent job describing topics in a simpler manner. Thank You.

[@rlasc84]

Nice solution for dealing with null exceptions. So much cleaner than use ifs to check the return value. Hopefully some day java implements de null safe operator like groovy or kotlin. Great video John!

[@user-jz4iz2qh9u]

Your channel is my go to for any Java related topic. Thank you! Could you please consider making some design patterns tutorials? 🙏🏻

[@zaph8015]

Null safety is one of the reasons I fell in love with Kotlin. It's caught me out so many times and helped me to think about where NPEs might be found even when working in other languages.

[@petarJK]

Excellent video! Very well explained. It's one thing to know something, totally different thing to be able to explain it well. Thanks!

[@mohammedalbj4268]

This is pure gold, thank you so much!

[@MrLuMax5]

Have been waiting for this for a long time, thank you!

[@dinaadel1672]

your videos are really useful and easy to understand.. and you are explaining lots of interview subjects.

[@juvipana]

This was awesome, you made me chuckle. Made it really easy to follow, thank you!

[@miltonezeh5085]

You are the BEST on these streets.

[@Fnaf-vh9cs]

this is something new definitely, IL look tomorrow into video and check some exercises. thanks John

[@rikkarth_]

Thank you, this video has helped me immensely.

[@viswanathsairam5956]

Optionals demystified with your video. Thanks a lot for this precise explanation

[@j.franciscox3318]

Love that desk setup, could you do a video about your desk setup? And maybe other stuff as well, such as your favorite IDE, text editors etc.

[@Anderzon1994]

Thanks for sharing your knowledge! I enjoy watching your tutorials!

[@sanjayranga2683]

The best possible explanation of Optional . You ve earned a subs and keep up.

[@user-te9hf7qs1y]

Thank you for your excellent videos! Best explanation of these small java- things!

[@ShermukhammadKarimov]

thanks for the clear explanation

[@ramkumar_balu]

Perfect and standard video about the Optional.

[@Ke5gggggel]

Love your videos! Always looking if you made a video on the java subject I am looking for first before I watch a video of somebody else. Do a Tutorial about Streams please!

[@emilywilson7835]

This channel brings me so much joy, and taught me so much. Thanks!

[@ahouzimohamed6387]

Hi John thank u for ur efforts , can u please do a tutoriel about the spring and spring boot it will be amazing by u

[@Un_Fulano_]

It would have taken me hours to look for and understand this information by myself. Thanks John.

[@isleschild]

thanks for the work, this was excellent.

[@ReBufff]

Didn't even know what optionals were until now. Thanks!

[@gabrielfono844]

this is so amazing as backend engineer, I 100% agree thanks a lot

[@magadiflo-dev]

Excellent explanation, calmly, deliberately and well mastered the subject, thanks for sharing your knowledge, greetings from Peru 🇵🇪

[@JoaoLima-pq1hm]

Precious content, thank you! Greetings from Brazil 😊

[@chentang514]

Amazing tutorial. Very clear.

[@TechOnScreen]

you just compiled all the facts about optional, thanks. can you also make a video on streams and lambdas and collections using them together to build business grade logical error-proof solutions..

[@xtay2287]

Didn't know about the map-method. Thanks :)

[@liliabekuzinaensosense8987]

You are just AMAZING! Please never stop! 💫

[@pranaylonkar19]

Awesome video...👍 Now this concept is crystal clear. Please upload videos on streams, functional interface, method reference, and default method. Thanks...

[@Ramison273]

my god, you are the best. i am from brazil and i am learning a lot with you. i love java and i found your channel last month, i am watching all your videos, your english and your explanation is so easy to understand.. thank you 😁😁

[@vamonosraza4361]

I am So grateful for your videos!

[@LutfarRahmanMilu]

Absolutely brilliant teaching style.

[@mohammadsadeghsheikhzahedi3682]

Great job 🙏

[@gamingislove3030]

Best video i ever saw on Optional.🎉🎉

[@BrunoAraujo14]

Thanks for this class, Schrodinger! 4:35

[@iot_enthusiast]

Wondering if you are planning to create Spring Boot content anytime soon :) After watching several videos in your channel, I believe that with that highly intuitive style of explaining subtle as well as complex, hard to understand concepts, the new content will attract a lot of views. Happy to be a subscriber :)

[@xmaxxxwellx]

Hi John! It's fantastic) I'm really appreciate it. The video is great! Thanks a lot :)

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Hello mr jhon . Thanks for your teaching video 🎉🎉🎉

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I definitely learned something! Thanks

[@ginasomara267]

Bro life saver. Your videos are amazing.

[@yashaswipandey7923]

Thanks man, i needed that.

[@asherkhan2656]

Great explanation John

[@Softrough1989]

Very good explanation and I loved the cat and the box. Thanks

[@SUMITYADAV-cy9hf]

hey John !!! amazing work requesting you to create a spring framework course as well .

[@gopalkannan4934]

I love your channel. Thank you so much

[@mohamedlegtibi802]

Best teacher so far. Greetings from Morocco 🇲🇦

[@azam11250]

great explaination sir. really liked ur videos and learned a lot. Thanks sir

[@eduardoprado8055]

Awesome explanation!

[@shakilahmed4647]

Before this I used to think optional is a mysterious box in Java. Thanks for the video

[@reynerb3918]

Thank you for the video, this is great content...

[@cosmoatlas2435]

wish I had you the sophomore year of college. Great work!

[@muhammedemad1155]

Great tutorial , thank you

[@jaylawlmc1915]

THANK YOU SO MUCH for actually explaining when are where optionals are actually useful as opposed to using a return annotated with "@Nullable". I am lucky to have understood this topic before watching your video, but before i got to that point i was *severely struggling* to get behind why i would use Optional instead of null in the first place. That is due to many tutorials on optionals just leaving things at "it's a container where a value may or may not be present" but not going as far as you did. I'm absolutely certain this video of yours will help tons of people!

[@pauldhartley]

I must confess to still being confused at the usefulness of optionals, though the video explains admirably some of the characteristics.

[@jaylawlmc1915]

@@pauldhartley cleaner and more functional code. Try working with streams for example. You cannot unlock the full power of streams using null checks

[@jaylawlmc1915]

@@pauldhartley I point out functionality because you cannot much with a null value, other than check it and pass it. Optionals on the other hand, are integrated into javas core functionality. You can do tons of things with them just with what java provides. That doesn't even take into account what you or others may code for it

[@jagger6277]

THANK YOU!!!

[@whitneybrown1715]

Awesome tutorial!

[@timmelis4872]

Another very well explained video ...

[@shepherdej1010]

Hey John, first off, fantastic Video and well explained. Second, would you be able to do a video on the Java Garbage Collector and ways to utilize it?

[@ultimatehuzefa]

Best Java Tutor!!

[@arcane3327]

The explanation with your cat was really great. Thanks for the good tutorial!

[@siegfriedkurz8753]

Impressively explained.

[@saiprakash5501]

Hi John, Nice content!...Keep up the good work🤝

[@RotatingBuffalo]

This is an example of a monad, in case anyone here has heard of monads but doesn't know what they are useful for yet. They generally provide a "Wrapper type" that you can use to chain operations safely on, without having to do intermediate work between every function/method.

[@d2k2]

Thank you!

[@nishiths9228]

I always check out your videos cause it’s very easy to understand even the difficult concepts because of easy to understand explanations. I would love to buy the keyboard that you are using , which one is that :) Thanks in advance .

[@dsmohammadaslam9527]

your are just extraordinary sir , thank you sir please make video on java date and time

[@victor__425]

Awesome! The society demands explaining all java features basing on this cute cat

[@tostanco1117]

I do recognize the way you speak so clearly.

[@dhilip77]

Your explanation are really simple, when could I expect spring boot

[@sebon11]

Great video as always

[@alinesinclaire2854]

epic explanation with the cat in the box it was so funny!

[@svalyavasvalyava9867]

thank you infinitely!!!

[@VivekSharma-zb6no]

Nice explanation 😊

[@philbowden3894]

Once again....excellent video.

[@aurojitbasak3249]

Great 👍👍👍 I was waiting for your video. Thanks. Love from India. ❤️❤️

[@xugefu]

Thanks!

[@nate6199]

Would you be able to do a video on using serializable for persistent data?

[@vijaydhanakodi5591]

you should really teach design patterns. one of the best tutor in the universe.

[@ashadahmad651]

I loved your explanation John, the way you explained was amazing, soothing and very clear. Especially loved the part where you mentioned how exactly a Optional is intended to be used, amazing content. Any chance you make courses on Springboot, Microservices etc please do upload them if you do or provide us a link to the course. Thanks once again.

[@Manish-ly7iw]

his name is john though

[@ashadahmad651]

@@Manish-ly7iw ohhh shit

[@Anon-jz7iw]

holy crap i was getting everything but the end just screwed with my head more, would definitely try to apply this in my project to learn it more

[@akshaysilgari2097]

Very nice explain bro.....

[@kareem7236]

thank you soo much

[@mdk1983]

A 6'5'' John saying "OR ELSE" to the face is quite a threat 😀 Wonderful and interesting tutorial as always. You're the best John!