Apache Sling System Bundle Extension: Activation API
· Adds the Activation API package to the system bundle exports.
The list of packages is derived from the packages available
in the Java 6 platform. To use more recent Activation API either
modify this bundle to also export those package from the
platform or install respective API bundles.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window org.apache.sling.fragment.activation-1.0.2.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.