z3k-templates/java
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Java app template — z3k platform
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Main.java feat: java template — Main.java 2026-07-26 20:13:34 +00:00
README.md feat: java template — README.md 2026-07-26 20:13:37 +00:00

README.md

Java app template

A minimal Java 21 web app for the z3k platform — a single Main.java using the JDK's built-in HTTP server, no Maven or Gradle. The Dockerfile compiles it with javac.

How it works

  • Listens on the PORT env var (default 8080).
  • GET /health returns 200 ok — used by the platform's health checks.
  • GET / greets using the APP_NAME env var.
  • Environment variables come from the console's Configuration tab.

Deploy

Edit Main.java, commit, and push to main — the platform builds the image and rolls out your app automatically.

Going further

Prefer Spring Boot, Quarkus, or another framework? Any Java app works — it just needs its own Dockerfile that builds the app and listens on PORT.