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Problem with knoplerfish

 
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I am using knoplerfish. I have register one service in Activator class of bundle and when I am trying to access this service in another bundle it is throwing an error.. class cast error..

Class which implements the service in onlineservices...
public class REengine extends JFrame implements AtlasClient,onlineservices


in another bundle
ServiceReference reference = context.getServiceReference(onlineservices.class.getName());
onlineservices service = (onlineservices)context.getService(reference);

i am getting error in last line.. where i am trying to cast class object to interface..

Please help
 
Amit Bathla
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onlineservices serv;
serv = new REengine(context);
ServiceRegistration registration = context.registerService(onlineservices.class.getName(), serv, new Hashtable());


This is the service registration code in Activator class
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