cant start bundle on apache felix

Question

I am trying to start my OSGi bundle with apache felix but probably i am doing something wrong. The error i am getting is :

g! install file:/c:/classes/example.jar 16:28:37 Bundle ID: 76 g! start 76 16:28:58 java.lang.ClassNotFoundException: tutorial.example1.Activator not found by tutorial.example1 [76]

And this is my code

package tutorial.example1;

import org.osgi.framework.BundleActivator; import org.osgi.framework.BundleContext;

public class Activator implements BundleActivator {

public void start(BundleContext context) throws Exception {
    System.out.println("Bundle started");
}

public void stop(BundleContext context) throws Exception {
    System.out.println("Bundle stopped");
}

}

Manifest-Version: 1.0

Bundle-ManifestVersion: 2

Bundle-Name: Example Bundle

Bundle-SymbolicName: tutorial.example1

Bundle-Version: 1.10.0 Bundle-Activator: tutorial.example1.Activator Import-Package: org.osgi.framework