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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[stevenschelling]

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

[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!

[nikamz]

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. :)

[Cloydz]

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

[LightningLion]

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!

[midhunmadhu]

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.

[zaph]

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.

[gulbalasalamov]

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

[RsZ]

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

[sg]

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

[biswarana]

Cat be like : things i need to comply with for some food..

[juanantoniosicardocontrera]

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.

[christianolsson]

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 :)

[adrianfiedler]

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

[whiterabbit]

Dude, I can say for sure that your way of explaining is the best I've seen on Youtube ever. That's considering that I'm not a native speaker. Thank you a lot.

[MariaBose-kyjf]

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

[rlasc]

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!

[gerdsfargen]

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

[chinmayrath]

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

[MrLuMax]

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