This is my sightly code :

<sly data-sly-use.search="amitsample.core.Services.Develope">

   ${search.details}

</p>

this is my bundle which I uploaded in felix console :

This is my path where i set my maven project:

Develope.java

================

And these are my code:

package amitsample.core.filters;

import com.adobe.cq.sightly.WCMUse;

import amitsample.core.filters.HelloService;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

public class Develope extends WCMUse {

Logger logger = LoggerFactory.getLogger(Develope.class);

protected String detail;

@Override

  public void activate() throws Exception {

  /*HelloService serv= getSlingScriptHelper().getService(HelloService.class);

detail=serv.getRepositoryName();

logger.info("this is the first log values");*/

logger.info("this is the first log values");

  }

   public String getDetails() {

   return "Amitgggg";

  }

}

HelloService.java

=============

package amitsample.core.filters;

/**

* A simple service interface

*/

public interface HelloService {

    /**

     * @return the name of the underlying JCR repository implementation

     */

    public String getRepositoryName();

}

HelloServiceImpl.java

===================

package amitsample.core.filters;

import javax.jcr.Repository;

import org.apache.felix.scr.annotations.Component;

import org.apache.felix.scr.annotations.Reference;

import org.apache.felix.scr.annotations.Service;

import org.apache.sling.jcr.api.SlingRepository;

@Service

@Component(metatype = false)

public class HelloServiceImpl implements HelloService {

    @Reference

    private SlingRepository repository;

    public String getRepositoryName() {

        return repository.getDescriptor(Repository.REP_NAME_DESC);

    }

}

Now I am setting logs to see whether it is working or not but I am not getting anything in my logs and in which page I am dragging and dropping the  component that uses   develop.java (WCMuse class) file thru sightly, There  also no value I am expecting  return "Amitgggg"; this in my page but not getting any idea what is the problem .