How to Convert jar files into bundles

There is a community article covering jar to OSGI bundle.
Link: https://helpx.adobe.com/experience-manager/kb/ConvertAJarIntoOsgiBundle.html
Here's a very simple way of turning an existing jar file in an OSGi bundle, while keeping control on exported packages.

The example creates an OSGi bundle from the attached junit-4.4.jar.
Note: The method below only works in a scenario where the jar file has no dependencies on other external jar files.

Start by creating a the jar's manifest file:

Manifest-Version: 1.0

Created-By: myself

Bundle-ManifestVersion: 2

Bundle-Name: JUnit 4.4 bundle

Bundle-Description: Package junit 4.4 in an OSGi bundle

Bundle-Version: 4.4.0

Bundle-ClassPath: .,junit-4.4.jar

Bundle-SymbolicName: org.junit.framework

Export-Package: junit.framework,junit.extensions,org.junit.runner,org.junit,junit.textui

Bundle-ClassPath header is set to allow embedding the original jar as is. Make sure its value matches the filename of the jar that you are going to embed in the bundle.
Export-Package is a list of packages contained in the jar that you would like to make available to other bundles running in the OSGi Container.

Jar file
Get the jar file, in our case fromhttp://mirrors.ibiblio.org/pub/mirrors/maven2/junit/junit/4.4/junit-4.4.jar
Create the bundle jar file by running the following command:

jar cvfm junit-4.4-bundle.jar manifest.txt junit-4.4.jar

Where manifest.txt is the name of the manifest file created above.

That's it - the resulting jar file (attached to this page as an example) is an OSGi bundle the exports the packages listed in Export-Package above, using the classes of the embedded junit-4.4.jar.