CheerpJ 3.0: A WebAssembly JVM to run real-world applications in the browser

[apignotti]

https://labs.leaningtech.com/blog/cheerpj-3.0

[jeffreportmill1]

Congratulations on a great product! I've played with it quite a bit and we finally have a great version of Java in the browser!

[hpeter → jeffreportmill1]

java in the browser...sounds familiar...

[kevingadd]

"It can run minecraft" is a pretty impressive bar to pass

[zb3]

One missing feature is the native code support for JNI.. Currently you have to manually provide JS functions to CheerpJ, and this isn't integrated with CheerpX AFAIK

[apignotti → zb3]

As part of the next release cycle we plan to release our C/C++ JNI implementation so that 3rd party JNI components can be compiled to dynamically loaded .wasm libraries.

This will be based on Cheerp (our C++ -> WebAssembly compiler).

Integration with CheerpX is another possibility, but we think building the modules from source it's a more realistic solution in the medium term.

[charcircuit → zb3]

Not using the system's runtime also means that it's impossible for an applet to attatch to a local java process as a debugger.

[jeffreportmill1 → k__]

CheerpJ uses http byte range requests which reduces the amount of necessary downloads. My full featured Java app downloads < 20 mb with CJ, which is about the same as hitting the front page of NYTimes.com or spending 20 seconds on YouTube.

[k__ → jeffreportmill1]

Yes, that's not bad.