• Example: Bundle-Activator: com.acme.foo.Activator

• Values: ${classes;implementing;org.osgi.framework.BundleActivator}

• Pattern: .*

Bundle-Activator

The Bundle-Activator header specifies the fully qualified name of the class that implements the org.osgi.framework.BundleActivator interface. This class is used by the OSGi framework to start and stop the bundle. When the bundle is started, the framework creates an instance of this class and calls its start method. When the bundle is stopped, the stop method is called.

The activator class must be included in the bundle and accessible on the bundle classpath. If the class is missing, not accessible, or not properly implemented, bnd will issue a warning or error during analysis.

Example:

Bundle-Activator: com.example.MyActivator

If the activator is not specified, the bundle will not have custom start/stop behavior.