Bootiful Spring Boot 3 x by Josh Long 

He’s the goat

It is like that by design. Scala, Kotlin are successful experiments. The successes get absorbed into Java after being field tested for years. Java ecosystem prefers stability over moving fast and breaking things. What is the market share of Scala today? Kotlin owes its user base to Android. Google wanted to avoid more lawsuits from Oracle, that was the main driving force behind Google adopting Kotlin for Android.

There's no significance in such a hint. Yes, I can infer from what you suggested that even though you are using a ConcurrentSkipListSet, you only want it for its behavior and not the methods that specific implementation provides but even so, does this matter at all? I'll have to read the rest of the code anyway so there's really no mental overhead when it comes down to check how you're handling that set. I strongly believe that the restrictions Java has imposed upon the var keyword are more than enough to cover the cases where it would actually become less readable code, anything else has very little significance and falls upon personal preference.

literally the very first thing You see on the screen is all the info about his social media ;)

CRaC: Hold my coffee

With native image builds it is extremely fast

Guess when spring integration with AI was announced.

Kotlin is great. But did you watch the video? I'm a kotlin GDE. I love Kotlin. I've done variations of this talk with Kotlin over the years, too. The thing that's interesting is the JRE runtime, which benefits Kotlin (and Scala and Groovy), too. And if you're a Java dev but want non-blocking IO (without the verbosity of the async/await in C# or suspend in Kotlin), then Java 21 is for you. If you want pattern matching (on par with Kotlin), lambdas (tho not quite as lovely as in Kotlin), auto typing (`var`), multiline strings, switch expressions, data classes (records), sealed and final types, and much more, then you could choose Kotlin, OR Java 21. and that's a nice situation to be in. the more the java and the jvm improve, the better off everybody - including kotlin - is.

Lol go back to your cs 101 intro to python class

C# over Java? Neah…