Java ThreadLocal

The Java ThreadLocal class is capable of keeping a single value internally per thread that accesses it. That means, that if multiple threads share a Java ThreadLocal, each of them can set their own value inside the ThreadLocal without overwriting each other's values. When getting the value again, each thread will get the latest value it has set on the ThreadLocal - and not any value set by other threads.

Chapters
0:00 Java ThreadLocal introduction incl. set() and get()
3:18 Java ThreadLocal remove() method
5:20 Java ThreadLocal with initial value
8:33 Set value lazily on Java ThreadLocal
10:21 Using a Java ThreadLocal from within an thread pool
11:39 Java InheritableThreadLocal

Java ThreadLocal - text:

Java Concurrency - text / video

Java Examples GitHub repo:

[wizzard]

Guys don't get overwhelmed, its a simple Map for threads. Each thread has it's own key and value.

[av]

You have created one of the best tutorial for multi threading.

[shubhamagarwal]

God of Concurency..i have bene flowing you since my 2014 when you used to write blog post only...by going through your post i attend interview like a LION when they ask mutithreading a Lot form 10+ yrs exp guy from BLR, India.

[shankar]

First time i ever felt someone giving correct portion of details for a concept in java using reasonable and correct language usage. ❤❤❤

[shobhanksharma]

When I saw name 'Jakob Jenkov', I immediately remembered a lot of your blogs on your website and I was sure your videos won't be let down as well. And as expected these are great!

[farhaankazi]

Thanks, Jenkov, I really appreciate your work. Finally, I understood how the hell Thread Local work without confusion. I read your article. I liked it and that was enough, but it also inspired me to see your vlog and I also saw it. Both of them are really best and worth spending time on both of them

[tousif]

The best tutorial on multithreading. Thanks for making my life easy - was struggling to understand ThreadLocal concept.

[gparasharu]

Great. Clear the of confusion around using ThreadLocal in the thread pool. Thanks.

[developerscentre]

Best channel for any Java related concepts! Please keep coming with more such contents. 🙂

[abhishekbaghel]

good to see your youtube channel.
I have learned a lot from your blogs.
thanks for creating your youtube channel.
looking forward to your upcoming video

[akshukla]

Thanks Jakob for posting these videos. I have been following your articles for over 4-5 years now. and Its nice to see you are posting videos on YouTube as well. Java Concurrency has been a painful topic for me. I hope to see more videos from you on Java Concurrency.

Thanks Again !!!!

[Golipillas]

Not a single dislike, well deserved, awesome content! 😊

[mostinho]

Thanks for great video

Todo: take notes
ThreadLocal in a thread pool will let tasks share variables stored in the threadlocal if the tasks are run by the same threads, this may not be what you want

Inheritable thread local allow child threads to share values, normal thread local is per thread

[maluginp]

Thanks, it's awesome guide to multithreading in Java.

[isaiassalles]

Dude, I love the content you have in your website and your videos make things even better

[namigtahmazli]

Such a valuable resource. Thank you very much.

[oliveryt]

Well done with the presentation and explanation!

[kafychannel]

Great tutorial! Thanks a lot. I also read it in text version, love it :)))

[SoeaOu]

thank you for the excellent videos in high quality

[ghettoteacher]

Hi there! I have recently finished a grad scheme as a software engineer and find your articles really helpful! Not sure if you’ve heard of the Disruptor library (from LMAX) but it would be cool to see you eventually teach that since it’s pretty cool the way they incorporate mechanical sympathy! Thanks and please do continue creating vids !