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.

Contents of a JAR file Java applications and libraries can contain hundreds of different files, including compiled Java source code, a manifest file, XML-based configuration data, JSON-based data ...

How to Extract a JAR File. While running your business, you may have to deal with JAR files, which are archives that compress several files into one. Though JARS are based on the ZIP compression ...