"Java Virtual Machine" refers to what?

Using your favorite internet search engine (NOT BING) to look up the Knights move problem and how to solve it in the following languages. 8088/286/386/486/X86/AMD64 Assembly (Intel, 8, 16, 32, or 64 bit is fine) C C++ Python 3 Php Java/DotNet Calculate which programming language most efficiently solves this problem from a point of view of the number of lines of code excluding imports, {, }, blank lines, and comments. You should graph or chart how the solution differs so it is clear and concise. Must include one paragraph describing how efficient the different languages are in regard to code length

Three computing environments are defined here.