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Tech riderRev. 20 Sept 2026

jEnv

Ch 226.8of 51 Development Environment Managers
  1. 1Runs onLinux, Mac
  2. 2CostsNot stated by the maker
  3. 3Supported scopelanguage + sdk
  4. 4Project version pinningYes
  5. 5Lockfile supportYes
  6. 6Automatic switchingYes
  7. 7Shell integrationYes
  8. 8Operating systemscross platform
7 lines stated Written from the maker's own pages: jenv.be
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Overview

jEnv is ranked #22 of 51 in development environment managers on Specifiction. It runs on Linux, macOS.

Compared on development environment managers

Supported scope
language_and_sdkjenv.be
Project version pinning
Yesjenv.be
Lockfile support
Yesjenv.be
Automatic switching
Yesjenv.be
Shell integration
Yesjenv.be
Operating systems
cross_platformjenv.be

Facts

Purpose
jEnv is a command-line tool for managing Java environments and the JAVA_HOME environment variable.jenv.be · 29 Sept 2026
Java version switching
It lets developers switch between Java versions on a development machine.github.com · 29 Sept 2026
Version scopes
Java versions can be selected globally, for a directory, or for a shell session.github.com · 29 Sept 2026
Project configuration
The local command creates a .java-version file that can be checked into Git for a project.github.com · 29 Sept 2026
Java installation
jEnv does not install Java; users install Java with a platform appropriate package manager and add its location to jEnv.github.com · 29 Sept 2026
Integrations
Optional plugins can export Java settings for Gradle, Maven, Ant, Leiningen, and sbt.github.com · 29 Sept 2026
Shell support
The documentation gives setup instructions for Bash, Zsh, and Fish shells.github.com · 29 Sept 2026
macOS installation
The site documents installation on macOS using Homebrew.jenv.be · 29 Sept 2026
Linux installation
The site documents installing jEnv from its Git repository on Linux.jenv.be · 29 Sept 2026
Open source
The project describes itself as open source and open to external contributions.jenv.be · 29 Sept 2026
Support
The site directs users to GitHub to report bugs or request missing features.jenv.be · 29 Sept 2026
Known issue
The project documentation says users have reported issues using jEnv with Fish.github.com · 29 Sept 2026
JAVA_HOME
It can set JAVA_HOME through its export plugin.github.com · 2 Oct 2026
JDK registration
The jenv add command registers an existing Java installation; jEnv does not install Java for you.github.com · 2 Oct 2026
Build tool integrations
Optional plugins support Gradle, Maven, Ant, Leiningen, and sbt.github.com · 2 Oct 2026
Installation
The maker’s site documents source installation on Linux and OS X, and Homebrew installation on Mac OS X.jenv.be · 2 Oct 2026
Shells
The maker’s site documents setup for Bash and Zsh; the repository README also gives Fish setup instructions and says Fish support is untested by the maintainer.github.com · 2 Oct 2026
Issue reporting
The maker directs users to create a GitHub issue to report bugs or missing features.jenv.be · 2 Oct 2026
Maintainer
The repository README lists Gildas Cuisinier as a maintainer.github.com · 2 Oct 2026

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