The activator for bundle is invalid

Question

I\'m trying to create a simple plugin in eclipse. When I run the application, I see this error in log file:

org.osgi.framework.BundleException : The a

Answer 1

I also met the same error. The activator XX for bundle XX is invalid, and the ClassNotFoundException. I checked plugins\ directory, and could not find the class needed.

-- Because there is no jar file containing the needed class, there is only the corresponding directory. For example, there is no com.hh.jar, but only com.hh directory.

So, there must be something wrong about creating the com.hh.jar.

if com.hh.jar reference other plugins, then also check them.

I solved the problem by editing MANIFEST.MF. Open it by Plug-in Manifest Editor, in runtime tab, add needed packages in "Exported Packages". and in the "classpath", add needed libraries, and, "." (current directory, IMPORTANT)