robovm VS JByteMod-Beta

Naturally depends on the use case, yet they work good enough to be in business for 20 years.

https://www.ptc.com/en/products/developer-tools/perc

https://www.aicas.com/wp/products-services/jamaicavm-tools/

https://www.codenameone.com/

Android 5 & 6 (only changed back into JIT/AOT due to long compile times), https://www.infoq.com/news/2014/07/art-runtime/

Unfortunely the best well known, Excelsior JET, is no longer in business, most likely due to GraalVM and OpenJ9 being available as free beer, while PTC, Aicas Codename One are safe in their domains.

There is also RoboVM (https://github.com/MobiVM/robovm) as free beer, however it actually started as a commercial product, and the acquisition from Xamarin kind of stagnated it (naturally).

I think libGDX still uses RoboVM, but I’m not sure if it’s being actively developed anymore.

For iOS the RoboVM project intends to be an AOT compiler for Java bytecode.

Kotlin is not ideal for iOS development afaik (maybe with RoboVM). With regards to Android development, it is perfect. For desktop applications it's good, there are always tradeoffs here. With regards to payment, I believe it is generally the case that you're paid more the harder the language is to learn (so C > C# > Python). This also affects how much people are looking for a certain kind of developer - there are more JS jobs than jobs requiring a C++ developer. Kotlin is a good choice to start though. It's not too complicated, it's not so simple that it's limiting you somehow, it's not too slow for most applications (+ it supports native somewhat) and it has a good environment with stable libraries you can rely on.

Yes, these are the native code compilers for Java, able to target Apple mobile platforms.

https://www.codenameone.com/

https://gluonhq.com/products/mobile/

https://github.com/MobiVM/robovm

First go grab JByteMod from their GitHub https://github.com/GraxCode/JByteMod-Beta/releases Download the latest zip version (currently JByteMod-1.8.2.zip) and unzip the contents to somewhere on your computer. Run the JByteMod-1.8.2.jar you just unzipped. (You need a Java RTE of your choice) Menu File > Load > Select your server jar file Menu Search > Search LDC > Find "www" Go to the Search tab to see the results and find the line with: "http://www.minecraft.net/game/checkserver.jsp?user=" Right click on it > "Jump to Declaration" Now you should see the bytecode listed in the Editor tab. Find the line again and left click on it. Then right click > Edit Change "www" to "session" and click OK Menu File > Save as > save it as a jar file with a new name eg "Server_online.jar" Replace your existing server jar with the new edited online jar in your server and edit your server.properties file to have online-mode=true instead of false. Done!