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jenv

A cross-platform JDK version management tool that allows you to easily switch between different JDK versions.

Features

• 🚀 Easy JDK version switching
• 💻 Cross-platform support (Windows, Linux, MacOS)
• ⚡️ Simple CLI interface
• 🔧 Easy configuration
• 🎯 Symbolic link based version switching

Please note:

jenv does not automatically download JDKs for you. You need to manually download multiple versions of the JDK and place them in the specified directory.

Installation

npm install -g @ringotangs/jenv

Requirements

• Node.js >= 16.20.2
• Administrator privileges (Windows) or sudo (Linux/MacOS) for creating symbolic links

Usage

Initialize jenv

First time setup:

jenv init

Configure JDK Paths

Add your JDK installations:

jenv config

This will guide you through:

1. Adding new JDK paths
2. Removing existing configurations
3. Listing current configurations

List Available JDKs

View all configured JDK versions:

jenv ls

Switch JDK Version

Change the active JDK:

jenv use

After switching versions, you'll need to configure your environment:

Windows

Set environment variables:

JAVA_HOME=<jenv_path>\jdk
Add %JAVA_HOME%\bin to your PATH

Linux/MacOS

Add to ~/.bashrc or ~/.zshrc:
bash
export JAVA_HOME="<jenv_path>/jdk"
export PATH="$JAVA_HOME/bin:$PATH"

Note: Restart your terminal after changing versions to apply the changes.

Windows Users Note

On Windows, you'll need either:

1. Run the command prompt as Administrator, or
2. Enable Developer Mode in Windows Settings

This is required for creating symbolic links.

License

MIT

Author

RingoTangs

Contributing

1. Fork it
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'feat: add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request