Getting Started with Java 21 - JDK 21 First Look

In this video you will learn how to get started with Java 21. You will learn where to download Java 21 from. Next you will learn what features are in this release. There are some preview features that In this release and one in particular I want to look so we will cover how to enable preview features.

🔗Resources & Links mentioned in this video:

👋🏻Connect with me:

[kuldeepsidhu]

Thanks Dan for the quick look of JDK 21. Would like to see more deep dive videos on JEP 439 and 444.

[aladeli]

My favorite new features are: virtual threads and record pattern matching

[ElSrJuancho]

I'm hyped because it is a long term version.

[alexanderruchkov]

Finally a proper string interpolation? Neat.

[eugeniu.]

"A Java version between 8 and 20 is required to execute Gradle. Java 21 and later versions are not yet supported." 😢

[theWorldOfIss]

Sir do a video hands on practical with java21

[QingtianWang]

For Spring boot webflux app running on earlier jdk version, how to use Java 21 Virtual thread? Or is there any point of using Virtual thread in netty/webflux based app?

[coderlady_]

Hello, if I were to start a spring boot project from scrach, is it better of using java 21 ?

[Anbu_Sampath]

3:30 JEP means JDK enhancement proposal.

[happydev]

Hi Dan, what is your vscode theme in this video?, this look really nice.

[paragkothari]

Hi, I will be completing my Bachelor's in 2024 so I am thinking to persue for Masters so my skills sets are like, core Java, Jakarta EE (tutorials available on yt, don't have much deep knowledge), will start spring this month. So like which side I should go cloud/databases means those traditional MS degrees with CS or those courses that are for AI. Like I think to be a SDE for few year then take a jump to may be architect or like those principal dudes but on the side ways that python fears me with AI eating high paying jobs in future... I don't have much knowledge about other ways after Java in the industry. Please guide me and help me how to learn and grow in this industry. We are already connected on LinkedIn, so let's meet there!

[JamesStansell]

I am confused to see --version (two dashes) work for you. I always used to need to use a single dash so I wonder if that is a change that I haven't heard about.

[alimrad]

Can you talk about Virtual thread, and make an example with spring boot

[yutoobe]

Relaunch your Chrome! You miss on security patches.

[pawsdev]

another good questin - when they will meca normal docs site like Kotlin, Python, JS has, normal beatiful docs site with all features and examples, not this ugly javadocs

[vukotici]

Unnamed variables not working with lambdas


-> {
throw new RuntimeException("shold not exits");
});


Caused by: java.lang.ClassFormatError: Illegal field name ""

@Dan Vega can you confirm