package com.estore.struts.dao;import java.util.Collection;import com.estore.struts.entity.Message;import com.estore.struts.utils.StoreException;public interface MessageDao {	void addMessage(Message message) throws StoreException;	void deleteMessage(Message message) throws StoreException;	void modify(Message message) throws StoreException;		Collection findAll()throws StoreException;		Message findById(Integer id)throws StoreException;}