# YaroslavGaponov/node-jvm

java virtual machine in pure node.js

Repository: https://github.com/YaroslavGaponov/node-jvm
Canonical: https://ross.abutalabs.com/products/node-jvm
Language: JavaScript
License Family: other
Topics: java, jvm
Last push: 2021-04-26T08:17:35+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4709, "days_push": 1955, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2106, forks 177 (observed 2026-08-28T04:06:13.996555+00:00)

## What it is
A Java Virtual Machine implementation written entirely in JavaScript for Node.js, capable of loading and executing compiled Java class files and JARs. It is primarily an educational/curiosity project demonstrating JVM bytecode interpretation rather than a production runtime.

## Use cases
- run compiled java class files from node.js
- execute java bytecode in javascript
- learn how a jvm interpreter works
- run java programs without installing java
- embed a toy jvm in a node application

## When to choose
- you want to experiment with or study JVM bytecode execution in JavaScript
- you need to run simple Java programs in a Node.js environment without a real JVM

## When to avoid
- you need a production-grade, spec-compliant JVM for real applications
- you need performance, full Java standard library support, or long-term maintenance
- your project requires an actively maintained dependency

## Facets
- artifact type: library
- maturity: abandoned
- function: interpreter
- domain: programming-languages, developer-tools
- platform: cross-platform
- tags: jvm, java, bytecode, virtual-machine, educational, nodejs

## Member repositories
- YaroslavGaponov/node-jvm (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:13.996555+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:53:58.934891+00:00, confidence not recorded.
  - readme: https://github.com/YaroslavGaponov/node-jvm (fetched 2026-08-28T04:06:13.996555+00:00, sha 77cab947cb6e)
  - registry_npm: https://registry.npmjs.org/node-jvm (fetched 2026-08-29T10:34:21.758097+00:00, sha 34e05b34157d)
- Data as of 2026-08-30T08:39:29.467469+00:00.