jEnv

jEnv is a command-line tool designed to manage multiple Java versions on a single machine. It simplifies the process of switching between different Java versions, which is particularly useful for developers who need to test their applications across various Java environments. jEnv works by modifying the PATH environment variable to point to the desired Java version, allowing users to seamlessly switch between versions without manual intervention.

The tool is platform-independent and supports major operating systems, including Windows, macOS, and Linux. It is particularly beneficial for developers who work on projects that require different Java versions, such as legacy systems or applications that have specific version requirements. jEnv can be easily installed using package managers like Homebrew on macOS or apt-get on Debian-based systems, or by downloading the source code and building it manually.

One of the key features of jEnv is its ability to set global and local Java versions. The global version is applied system-wide, while the local version is specific to a particular project directory. This flexibility allows developers to maintain a consistent environment for their projects while still being able to switch to different versions as needed.

jEnv also integrates with other tools and environments, such as SDKMAN!, which is another popular tool for managing Java versions. This integration enhances its usability and makes it a valuable addition to a developer's toolkit. Overall, jEnv provides a straightforward and efficient way to manage multiple Java versions, helping developers streamline their workflow and ensure compatibility across different environments.