PyJVM – JVM in Python

I saw what you did there. :)

it's the worst of both worlds, for all to enjoy!

A few years ago I wrote a Java decompiler. Not to actually decompile code but to learn how to use my weapon of choice (Java) at a deeper level.

I never finished. The only code I ever bothered decompiling was code I had written to test the decompiler. But I learnt a heck of a lot about how the JVM works, about Java byte code, and about some data structures and analysis. And I learnt exactly how the Java class file is defined.

It is something I'd highly recommend trying for your language of choice.

Exactly, just do it for fun. Much can be learned and created that way.

This is something I have been trying to find the time to do.

Something like this is great to learn how the JVM actually works, and can improve the way you code Java. I always found it incredibly boring to read language/vm specs but building something like this makes the abstract and obscure, concrete (at least for a programmer's brain)

It's definitely totally fine to build these things for fun, but with a landing page like this, it seems like the author built it for some purpose beyond that, otherwise I don't see the point in presenting it in this form.

If the author wanted to learn _and_ get publicity, a blog post or at least including a "why" section that says "just for fun" on the landing page would seem suitable to me.

There probably is some interesting motivation for doing this, it's just not clear what it is.

I can see it now

PyJVM --> Jython --> PyJVM --> Jython ...

It reminds me a bit of LISP interpreters that are mostly/entirely written in LISP.

Google that burger. I would label it a stunt, but it is something that someone has made.

Edit: The moderately less farcical versions don't seem to mix the lobster and truffles.

Why: https://github.com/andrewromanenco/pyjvm/blob/master/WHY.md

Not quite a burger but Tournedos Rossini [1] exists. This is a fillet steak topped with foie gras and served with black truffles.

[1] http://en.wikipedia.org/wiki/Tournedos_Rossini

That sounds awesome in its own way. You could probably make millions in Houston with a restaurant featuring that.

I think you underestimate how quickly programmers can add abstractions.

Check out drip?

Or a pure Lua JVM

https://cowlark.com/luje/doc/stable/doc/index.wiki

Needs Parrot and Javascript in there somewhere though, for maximum coolness factor.

And if I recall correctly Graal, the next generation Java JIT Oracle is working on is also working on Python support. By far not there yet but pretty cool to see them take their compiler efforts beyond Java.

There isn't one. More helpfully, the author describes it as a learning experience. How to implement a stack-based virtual machine in Python.

You are using a computer that has Python installed, but not Java (perhaps for security reasons). But you need to run some Java code.

Dead? Python 2.7 seems to be Good Enough(TM) for much of the industry titans that I don't think we'll ever see widespread Python 3.x adoption within the heavy-weights' infrastructure.

Python 2.7 is far from dead, and the changeover to Python 3 seems to be similar to Perl5->Perl6 -- or, more to the point, not happening at all.

shit works, yo, and python can only blame itself for so many people (myself included) remaining with 2.7.