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 Hibernate Annotation:-

Annotation is used to change the behavior of a class, method, and data member of the class using a predefined attribute.

Without using the hibernate mapping file we can map the database table using an annotation class.

The annotation will be defined under the POJO Class.

@Table:-  this annotation is used to map the database table from class

@Column:-  this annotation is used to map the database table column

@id:-   it is used to define the primary key column of the table

@Entity:-  It is used to provide annotation to implement database schema

if we use the Annotation Mapping class then we will define the mapping class under the hibernate.cfg.xml file

<mapping class="packagename.Pojoclassname" />

All hibernate annotations exist under javax.persistent package. means javax.persistence jar file should be present in your project lib folder.

Step First:-

Create Pojo class with annotation

package scs;

import javax.persistence.*;

public class Student {
private int rno;
private String sname;
private String branch;
private int fees;
public int getRno() {
return rno;
public void setRno(int rno) {
this.rno = rno;
public String getSname() {
return sname;
public void setSname(String sname) {
this.sname = sname;
public String getBranch() {
return branch;
public void setBranch(String branch) {
this.branch = branch;
public int getFees() {
return fees;
public void setFees(int fees) {
this.fees = fees;



Create hibernate.cfg.xml file and add POJO class as a mapping file reference

<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"

<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost:3306/java56db</property>
<property name="connection.username">root</property>
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="">update</property>
<property name="show_sql">true</property>
 <mapping class="scs.Student"></mapping>


Create Datahelper class:-

package dao;
import java.util.List;

import org.hibernate.*;
import org.hibernate.cfg.*;
public class DataHelper {
static SessionFactory sf ;
static Session s ;
public static void connection()
Configuration cfg = new Configuration();
sf= cfg.buildSessionFactory();
s = sf.openSession();
public static List dqlOperation(String query)
Query q = s.createQuery(query);
return q.list();
public static void dmlOperation(Object c)
Transaction tx = s.beginTransaction();;
public static void deleteOperation(Object c)
Transaction tx = s.beginTransaction();
public static Object findOperation(Class c,int id)
return s.load(c,id);
public static void closeConn()


Write the code to Insert the record

package scs;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.*;

import dao.DataHelper;

public class InsertRecord {

public static void main(String[] args) {
Student stu = new Student();



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