Question 1

How do I install jEnv on Linux?

Accepted Answer

Clone the repository from GitHub into ~/.jenv, add it to your PATH in shell config files (e.g., ~/.bashrc for bash), and run 'eval "$(jenv init -)"' to initialize. Restart your shell for changes to take effect.

Question 2

jEnv vs SDKMAN: which should I use?

Accepted Answer

jEnv is lighter and only manages existing Java installations, while SDKMAN also installs Java. Choose jEnv if you already have Java installed via package managers and want minimal overhead; opt for SDKMAN for a more comprehensive solution that handles installation.

Question 3

How to set a specific Java version for a project with jEnv?

Accepted Answer

Use 'jenv local <version>' in your project directory, which creates a .java-version file. This automatically sets JAVA_HOME when you cd into the directory, and the file can be committed to Git for team consistency.

Question 4

Why isn't jEnv setting JAVA_HOME correctly?

Accepted Answer

First, ensure the export plugin is enabled with 'jenv enable-plugin export' and restart your shell. Run 'jenv doctor' to check for errors, such as Java binaries not being in jenv shims, and use 'jenv add' to add missing Java paths.

Question 5

Can jEnv work with Android Studio or IntelliJ?

Accepted Answer

jEnv sets JAVA_HOME in the shell, but IDEs may not pick this up automatically. On macOS, use 'jenv macos-javahome' to set a static JAVA_HOME for GUI apps, but note it only reflects the global version, not local or shell settings.

Question 6

How to remove a Java version from jEnv?

Accepted Answer

jEnv doesn't uninstall Java; it only manages paths. To remove a version from jEnv's list, you may need to manually delete it from the ~/.jenv/versions directory, but the README doesn't provide a dedicated command, so caution is advised.

jenv

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