Provides classes for reading and writing the JAR (Java ARchive) file format, which is based on the standard ZIP file format with an optional manifest file. The manifest stores meta-information about the JAR file contents and is also used for signing JAR files.

## Package Specification

The `java.util.jar` package is based on the following specifications:

- Info-ZIP file format - The JAR format is based on the Info-ZIP file format. See java.util.zip package description.

  In JAR files, all file names must be encoded in the UTF-8 encoding.

- Manifest and Signature Specification - The manifest format specification.

@since 1.2