[yjftsjthsd-h]

Nit:

> I also know that Java works via the "Javascript Virtual Machine"

Java Virtual machine. That Java and JavaScript are named the way they are is... basically a historical accident of a cross-promotion gone too far, IMO. They aren't really related (at least, in the way that the name might imply).

Now to your real question. Virtual machines are anything that is one computer pretending to be another computer. Sometimes, that's an x86_64 PC pretending to be another x86_64 PC to run a different OS. Sometimes that's an x86_64 PC pretending to be a 50-year-old mainframe ( https://opensimh.org/ really shines there). Sometimes it's an ARM laptop running macOS pretending to be an x86_64 PC so it can run Windows. And, relevant here, sometimes it's a phone pretending to be a machine that has never actually existed in hardware. You can just make up an imaginary machine that has any old characteristics you want. Maybe it has a built-in high-level network card that magically turns HTTP requests into responses without programs having to implement HTTP themselves. Maybe it has an imaginary graphics card that directly renders buttons. Maybe you imagine a CPU that runs Java opcodes directly. Whatever it is, if you can imagine a system and then write a program that emulates it, you can make a virtual machine and run stuff in it.

[Wowfunhappy]

> Java Virtual machine. That Java and JavaScript are named the way they are is... basically a historical accident of a cross-promotion gone too far

Oops, that was a typo! Thank you.