Not a screenshot — a real JVM running in a Docker container on private hardware, reached through a Cloudflare Tunnel. Every number below is read live from the process on each request.
Compute n! exactly using java.math.BigInteger — arbitrary
precision, no overflow. The work happens on the server; you get back the digit count and how
long the JVM took.
GET /java/api/info — live responseloading…
Auto-refreshes every 5s · powered by Spring Boot on a JVM that won't be online 24/7.