HiberNate Simple Application Using Annotation

-

Model Class: 


package com.learnjavabyanand;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;

/**
 * @author ananddw
 *
 */
//@Entity will create table as per class name By if you specify name then table name must be the name what you will provide inside Entity
@Entity(name="employee_Details")
public class EmployeeDetails {

//we can put this annotation above getter as well
@Id
@Column(name="employee_name")
private String employeeName;

@Column(name="employee_number")
private String employeeNumber;

@Column(name="employee_location")
private String employeeLocation ;


public String getEmployeeName() {
return employeeName;
}
public void setEmployeeName(String employeeName) {
this.employeeName = employeeName;
}
public String getEmployeeNumber() {
return employeeNumber;
}
public void setEmployeeNumber(String employeeNumber) {
this.employeeNumber = employeeNumber;
}
public String getEmployeeLocation() {
return employeeLocation;
}
public void setEmployeeLocation(String employeeLocation) {
this.employeeLocation = employeeLocation;
}



}



HiberNate Client :-


package com.learnjavabyanand;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;
import org.hibernate.cfg.Configuration;

/**
 * 
 * @author ananddw
 *
 */
public class HibernateClient {

public static void main(String[] args) {
// TODO Auto-generated method stub
EmployeeDetails employee= new EmployeeDetails();
employee.setEmployeeName("Anand Dwivedi");
employee.setEmployeeNumber("MER-12");
employee.setEmployeeLocation("Bangalore");
try{
//get the configuration  and create a session factory once in out application 
SessionFactory factory=new AnnotationConfiguration().configure().buildSessionFactory();
//create session from session factory to save/retrive or other operation 
Session session=factory.openSession();
//new transaction and save object inside trans
session.beginTransaction();
//save Object 
session.save(employee);
//commit the session 
session.getTransaction().commit();
}catch(Exception e){
e.printStackTrace();
}

}

}


hibernate.cfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
  <session-factory>
  <!--  Postgres DB Details  -->
    <property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
    <property name="hibernate.connection.url">jdbc:postgresql://127.0.0.1:5432/hibernate</property>
    <property name="hibernate.connection.username">postgres</property>
    <property name="hibernate.connection.password">password</property>
      <!--  Postgres DB Details End  -->
    
    <!-- Postgres Dialect has information of list of  queries avil in Postgres DB -->
    <property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
    <!-- Postgres Dialect End -->
    
    <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
    
    <!--  Echo show Query  -->
    <property name="show_sql">true</property>
     <!--  Echo show Query End  -->
    
    <property name="format_sql">true</property>
    
    <!--  Create every time table and insert Data -->
    <property name="hibernate.hbm2ddl.auto">create</property>
    <!--  Create every time table and insert Data End -->
    
    <!--  Define Package for mapping class -->
    <mapping class="com.learnjavabyanand.EmployeeDetails"/>
    <!--  Define Package for mapping class End -->
   
  </session-factory>
</hibernate-configuration>


Folder Structure : 





PS: Please Add all the hibernate required jars as well as Database jars

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