# Module jdk.jartool

Defines tools for manipulating Java Archive (JAR) files, including the jar and jarsigner tools. This module also defines APIs for signing JAR files.

This module provides the equivalent of command-line access to jar via the `ToolProvider` SPI. Instances of the tool can be obtained by calling `ToolProvider.findFirst` or the service loader with the name `"jar"`.

Tool Guides:
  jar, jarsigner

Since:
  9

- - ## Packages

    Exports
    Package | Description
    --- | ---
    com.sun.jarsigner | This package comprises the interfaces and classes used to define the signing mechanism used by the `jarsigner` tool.
    jdk.security.jarsigner | This package defines APIs for signing jar files.