There is https://en.wikipedia.org/wiki/Java_Platform,_Micro_Edition https://en.wikipedia.org/wiki/Java_Platform,_Micro_Edition But of course, a 32KB RAM minimu

There is https://en.wikipedia.org/wiki/Java_Platform,_Micro_Edition https://en.wikipedia.org/wiki/Java_Platform,_Micro_Edition But of course, a 32KB RAM minimum would be too much for some legacy systems. Still, Java is actually far more flexible than most people would think. (Also, at its heart the JVM is just a Forth-like stack based interpreter, and I would guess that loading and parsing a .class file is more complicated than the interpreter itself!)