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javaup documentation

Quick Start

Before starting, make sure that:

  • the project root contains pom.xml;
  • the project contains Maven Wrapper, or mvn is available on PATH;
  • a full JDK matching the project’s Java version is already installed. A JRE alone is not sufficient.

Initialize, inspect, and build:

Terminal window
cd /path/to/your/maven-project
jup init
jup status
jup run mvn clean package

Example status:

Project: /work/demo
Build tool: Maven 3.9.11 (wrapper)
Build executable: /work/demo/mvnw
Java version: 17.0.12
Java home: /opt/jdks/temurin-17
Maven settings: default

Inside an initialized Maven project, jup run mvn uses the nearest saved project and starts Maven in the current directory. In any other interactive location, it lists every initialized Maven project. Select one with the arrow keys and Enter. Frequently and recently used projects rise to the top, and Maven starts in the selected project root.

In CI or redirected pipelines, no picker is displayed. jup resolves the nearest initialized project from the current directory and starts Maven there.