Final Keyword in Java Full Tutorial - Final Classes, Methods, and Variables

What does "final" do in Java? Learn what the "final" keyword means in 3 different places in your Java programs. Java has final variables, final classes, and final methods, and "final" works differently in each of those places.
So "final" in Java can be a bit confusing, but doesn't have to be! This video gives a complete understanding of "final" and how you can use it in your own Java programs.
Learn exactly what final variables, final classes, and final methods mean in this beginner's Java lesson video.

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Hey, 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 developers.

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[adrianlowery]

You are a master teacher. You know in what order to teach concepts, which examples will best convey the concept, and how to simply TEACH! Your personality, your passion, and the feeling of ease that you give off is so amazing. You'd be a great streamer. You're a fantastic communicator

[sebon]

Dude, it's impressive how extremely clear you are in how you teach. Seriously, i don't know if there's any second in this tutorial (and all others) that could've been done better. Impressive

[njoelemmanuel]

man you are amazing. i watched about 10 of your videos and understood each one of them. you are an amazing teacher john. have the utmost respect for you

[dname]

The great thing about these videos, it's not just the 'how to', but also give a real example from your experience. It helps so much to make sense. Thank you so much :)

[ralufilth]

Dude, you have a video for every question I have! Love it! Thank you, it really helps! Keep it up!

[khiemdo]

Great tutorial for Final keyword in Java. Great appreciated for the video, John. I will pass my Java interview with your videos. Happy holidays

[francksgenlecroyant]

I wish YouTube could make it possible to give a video a like any number of times i want. John is a Hero! Thanks John!

[jvsnyc]

Great video. Sometimes it is reasonable to have a final instance variable, which can be initialized in its definition or in the constructor or an init block, but not later. Not as common as the examples you gave, tho.

[burgerbob]

Your channel is awesome, every video i've seen so far is succinct. This is the perfect way to refresh on Java concepts without having to waste time digging through my old courses or forums.

[Anderzon]

Thanks a lot John. I've been learning many things with your videos.

[Clean_Slate]

Excellent video! Thanks for making concepts like that easy to understand while keeping the video short.
I really hope your channel grows big, since I believe it deserves a lot more subs! Cheers 🍺

[snsnsn]

The way you explain the ideas behind the scenes really makes it tangible. Thanks :)

[gabrielfono]

I dont know
for some reasons, anytime I have issues, I just jump on your youtube channel and found a perfect solution.
sir, I love what you are doing.
love from herndon virginia

[preethimarineni]

I really admire the way you define, explain tings . I feel it will be more good to ask questions at the end of explaining which helps to think more.

[YerushalayimShelZahv]

John, love the videos. Thank you for making them.

[micleh]

As always, very helpful, comprehensive and well-explained video.

[teaadvice]

You're missing the static keyword video. And I need it john!!!!

[sarahmahyoub]

I always wondered why we need to use static with final when it comes to methods. now i know! Amazing job! Subscribed already and i do that rarely!

[gopalkannan]

Great teacher know how to explain easy way.

[einaveldaz]

Thank you for the video. Help me so much ❤