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create-spring-boot-java-project

Create a new Spring Boot Java project (Maven or Gradle) from start.spring.io with sensible defaults for configuration, PostgreSQL, logging, security, testing and Docker. Use when asked to scaffold, bootstrap or generate a Spring Boot application. Detects existing project versions and never upgrades implicitly.

skills/create-spring-boot-java-project/SKILL.md

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SKILL.mdcore · 4,622 bytes
SKILL.mdcore · 4,622 bytes
assets/Dockerfileruns · 2,191 bytes
assets/Dockerfile-gradleasset · 2,514 bytes
assets/Dockerfile-nativeasset · 1,211 bytes
assets/Dockerfile-native-gradleasset · 1,282 bytes
references/PROVENANCE.mddoc · 1,754 bytes
references/configuration.mddoc · 2,219 bytes
references/database.mddoc · 3,511 bytes
references/docker.mddoc · 4,503 bytes
references/logging.mddoc · 1,600 bytes
references/security.mddoc · 2,420 bytes
references/spring-boot-4.mddoc · 2,202 bytes
references/versions.mddoc · 2,694 bytes

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# Create a Spring Boot Java project

Scaffold a Spring Boot application with [start.spring.io](https://start.spring.io), then apply a small set of opinionated defaults. Out of scope for now: front-ends (Vue/React/Angular), cloud deployment (Azure), Git setup, CRaC and AOT images.

## Step 0: Detect before you create

- If the working directory already contains a `pom.xml` or `build.gradle(.kts)`, this is an **existing project**: do not regenerate it. Read its Spring Boot, Java and test-framework versions and follow them. **Never upgrade versions implicitly**; propose an upgrade and wait for the user's decision.
- Check the tools: `java -version` (JDK matching the chosen Java version), `docker --version` (needed for Testcontainers and Compose). On the default path (current Boot via start.spring.io) Maven/Gradle need not be installed: the generated wrapper is used. The Boot 3.5 fallback needs Maven or Gradle installed once to create the wrapper (see [versions.md](references/versions.md)).
- Ask only for what is missing: project name, group id, package, build tool (default **Maven**), dependencies (default: web, actuator, validation, devtools; add `data-jpa`, `postgresql`, `security`, `docker-compose`, `testcontainers` when a database or auth is needed).

## Step 1: Resolve versions

Follow [references/versions.md](references/versions.md): query `https://start.spring.io/metadata/client` at run time for the latest stable Spring Boot release, fall back to the documented pinned values if offline. Do not hardcode `latest` anywhere.