em.persist(message);

 package  entity_pack;

 import  javax.persistence.*;
 import  java.util.*;
 import  java.io.Serializable;

@Entity
 public   class  Message  implements  Serializable {
     private   int  message_id;
     private  String message_header;
     private   int  emp_id;
     private  Date message_date;
     private   int  local_user_id;

     private  List<Happened_event_list> happened_event_lists;
     private  List<Message_inclusion_list> message_inclusion_lists;
     private  Emp emp;
     private  Local_user local_user;

    @ManyToOne
     public  Local_user getLocal_user() {
         return  local_user;
    }

     public   void  setLocal_user(Local_user local_user) {
         this .local_user = local_user;
    }

    @OneToMany(mappedBy="message")
     public  List<Message_inclusion_list> getMessage_inclusion_lists() {
         return  message_inclusion_lists;
    }

     public   void  setMessage_inclusion_lists(List<Message_inclusion_list> message_inclusion_lists) {
         this .message_inclusion_lists = message_inclusion_lists;
    }



    @ManyToOne
     public  Emp getEmp() {
         return  emp;
    }

     public   void  setEmp(Emp emp) {
         this .emp = emp;
    }


    @OneToMany(mappedBy = "message")
     public  List<Happened_event_list> getHappened_event_lists() {
         return  happened_event_lists;
    }

     public   void  setHappened_event_lists(List<Happened_event_list> happened_event_lists) {
         this .happened_event_lists = happened_event_lists;
    }

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
     public   int  getMessage_id() {
         return  message_id;
    }

     public   void  setMessage_id( int  message_id) {
         this .message_id = message_id;
    }

     public  String getMessage_header() {
         return  message_header;
    }

     public   void  setMessage_header(String message_header) {
         this .message_header = message_header;
    }



     public   int  getEmp_id() {
         return  emp_id;
    }

     public   void  setEmp_id( int  emp_id) {
         this .emp_id = emp_id;
    }

     public  Date getMessage_date() {
         return  message_date;
    }

     public   void  setMessage_date(Date message_date) {
         this .message_date = message_date;
    }

     public   int  getLocal_user_id() {
         return  local_user_id;
    }

     public   void  setLocal_user_id( int  local_user_id) {
         this .local_user_id = local_user_id;
    }

 private   int  local_user_id;
 private   int  emp_id;