The Java JAR file in review The JAR file is an important artifact in the world of Agile software development in Java. Really, though, the JAR file is just a ZIP file with a different file extension.

A JAR file is an archive file but is more than a file compression format. Here's how to open, run, or execute JAR files.

Some Java installers configure Windows or Ubuntu to run Java JAR files when they are double clicked, but not every installer supports this configuration. Furthermore, it is possible that you didn’t ...