LIGHTCLOUD

Runtime

Deploy Java on Light Cloud

Java runs services built with Spring Boot, Quarkus or a plain Maven or Gradle project. Light Cloud detects it from a pom.xml, build.gradle or build.gradle.kts. It runs as a container that scales with traffic and down to zero when idle.

Free plan, no card. Google or GitHub sign-in.

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Deploy Java

Java at a glance

Detected from
a pom.xml, build.gradle or build.gradle.kts
Runs as
Container that scales with traffic and to zero when idle
Versions
JDK 17, 21 or 25 (default 21), read from the Gradle toolchain, sourceCompatibility, or Maven java.version and maven.compiler.release
Build
Maven 3.9 or Gradle 8 (Gradle 9 for JDK 25), with gradlew when the repository has one
Start command
java -jar app.jar
Port
8080, also passed as SERVER_PORT and QUARKUS_HTTP_PORT

How to deploy Java

  1. 01

    Bring the code

    Pick a repository, upload a folder, or ask Claude Code or GitHub Copilot to put it online.

    github.com/acme/app

  2. 02

    Java, detected

    The files are read and the build is filled in. Every setting can be changed by hand.

  3. 03

    Built into a container

    An image is built and started, listening on the port the app expects.

  4. 04

    Live

    A light-cloud.io URL in minutes, a preview URL for every branch, and logs and metrics beside it.

    main-app-acme.light-cloud.io

Frameworks on Java

Detected the same way, each with its own build and start command.

Add a database

Managed PostgreSQL in the same project, its connection string one copy away.

Questions

How do I deploy Java?
Connect the repository, upload the folder, or ask Claude Code or GitHub Copilot to deploy it. Light Cloud reads the files, builds Java and returns a live URL in minutes, with a preview URL for every branch.
How much does it cost to host Java?
The Free plan runs up to 3 server apps with $1 of usage a month and no card. A container is billed by the hour only while it runs, so an idle app costs nothing and a quiet one uses about $0.10 a month. Paid plans start at $5 a month with $5 of usage included.
Can a Java app use a database?
Yes. Create a PostgreSQL database in the same project and set its connection string as DATABASE_URL. Databases come with paid plans, from $5 a month.
Can I use my own Dockerfile instead?
Yes. A Dockerfile at the root of the repository always wins over detection: it is built as is and runs as a container.

Java, live in minutes

Connect a Java repository and get a live URL. Start free, no card.

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