Hibernate

<!-- properties -->
    <property name="connection.driver_class">
        com.mysql.jdbc.Driver
    </property>
    <property name="hibernate.connection.url">
        jdbc:mysql://localhost:3306/delivery
    </property>
    <property name="hibernate.dialect">
        org.hibernate.dialect.MySQLDialect
    </property>
    <property name="hibernate.show_sql">true</property>
    <property name="hibernate.connection.username">root</property>
    <property name="hibernate.connection.password">root</property>
    <property name="connection.pool_size">10</property>
    <property name="hibernate.c3p0.max_size">10</property>
	<property name="hibernate.c3p0.min_size">2</property>
	<property name="hibernate.c3p0.timeout">5000</property>
	<property name="hibernate.c3p0.max_statements">10</property>
	<property name="hibernate.c3p0.idle_test_period">3000</property>
	<property name="hibernate.c3p0.acquire_increment">2</property>
	
    <!-- mapping files -->
    <mapping class="Usuario"/>
</session-factory>

import org.hibernate.SessionFactory;

import org.hibernate.cfg.AnnotationConfiguration;

public class HibernateUtil {

private static final SessionFactory sessionFactory;

static{

try{

sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();

}catch(Throwable ex){

System.out.println(“Inicialização do Session Factory falhou.”+ ex);

throw new ExceptionInInitializerError(ex);

}

}

public static SessionFactory getSessionFactory(){
	return sessionFactory;
}

import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.GenerationType;

import <a href="http://javax.persistence.Id">javax.persistence.Id</a>;

import javax.persistence.Table;

@Entity

@Table(name=“usuario”)

public class Usuario implements Serializable {

@Id

@GeneratedValue(strategy=GenerationType.SEQUENCE)

private int id_usuario;

private String nome;

private String login;

private String senha;

private String sexo;

private boolean ativo;

private int faixa_idade;

public Usuario(){		
}

public void setAtivo(boolean ativo) {
	this.ativo = ativo;
}
public void setFaixaIdade(int faixa_idade) {
	this.faixa_idade = faixa_idade;
}
public void setIdUsuario(int id_usuario) {
	this.id_usuario = id_usuario;
}
public void setLogin(String login) {
	this.login = login;
}
public void setNome(String nome) {
	this.nome = nome;
}
public void setSenha(String senha) {
	this.senha = senha;
}
public void setSexo(String sexo) {
	this.sexo = sexo;
}
public boolean isAtivo() {
	return ativo;
}
public int getFaixaIdade() {
	return faixa_idade;
}
public int getIdUsuario() {
	return id_usuario;
}
public String getLogin() {
	return login;
}
public String getNome() {
	return nome;
}
public String getSenha() {
	return senha;
}
public String getSexo() {
	return sexo;
}

public UsuarioDAO() {
	
}

public void salvar(Usuario Usu){
	session = HibernateUtil.getSessionFactory().getCurrentSession();
	session.beginTransaction();
	session.save(Usu);
	session.getTransaction().commit();
}

public class principal {

public static Session session;

/**

* @param args

*/

public static void main(String[] args) {		

// TODO Auto-generated method stub

Usuario Us = new Usuario();
	Us.setNome("Gustavo");
	Us.setLogin("Gustavo");
	Us.setSenha("Samuel");
	Us.setSexo("M");
	Us.setAtivo(true);
	Us.setFaixaIdade(1);
			
	UsuarioDAO usuarioDAO = new UsuarioDAO();
	usuarioDAO.salvar(Us);

}

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

 <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>  
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/delivery</property>  
 <property name="hibernate.connection.username">root</property>  
 <property name="hibernate.connection.password">root</property>  
 <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>  
 <property name="show_sql">true</property>  

 //... demais properties
            
 <mapping class="seu.pacote.SuaClasse"/>    // ao inves de colocar so usuario, coloca o caminho todo 
            
 </session-factory>  
 </hibernate-configuration>