public class HibernateUtil {
   
    private static final EntityManagerFactory emf;
   
    static {
        try {           
            emf = Persistence.createEntityManagerFactory("AgaderPU");           
        } catch (Throwable ex) {
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }
   
    public static EntityManagerFactory getEntityManagerFactory() {
        return emf;
    }   

}

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
  <persistence-unit name="AgaderPU" transaction-type="RESOURCE_LOCAL">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
    <class>xxx.xxx.xxx.XBean</class>
    <properties>
      <!-- use a file system based index -->
      <property name="hibernate.search.default.directory_provider" value="org.hibernate.search.store.FSDirectoryProvider"/>
      <!-- directory where the indexes will be stored -->
      <property name="hibernate.search.default.indexBase" value="/indexes"/>
      <property name="hibernate.ejb.event.post-insert" value="org.hibernate.search.event.FullTextIndexEventListener"/>
      <property name="hibernate.ejb.event.post-update" value="org.hibernate.search.event.FullTextIndexEventListener"/>
      <property name="hibernate.ejb.event.post-delete" value="org.hibernate.search.event.FullTextIndexEventListener"/>
      <property name="hibernate.connection.url" value="jdbc:mysql://boqueixon:3306/*****"/>
      <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
      <property name="hibernate.connection.password" value="****"/>
      <property name="hibernate.connection.username" value="****"/>
      <property name="hibernate.show_sql" value="true"/>
      <property name="hibernate.cache.provider_class" value="org.hibernate.cache.NoCacheProvider"/>
      <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
         
<property name="hibernate.c3p0.acquire_increment" value="1"/>
<property name="hibernate.c3p0.idle_test_period" value="5"/>
<property name="hibernate.c3p0.timeout" value="5"/>
<property name="hibernate.c3p0.max_size" value="5"/>
<property name="hibernate.c3p0.max_statements" value="100"/>
<property name="hibernate.c3p0.min_size" value="1"/>
<property name="hibernate.c3p0.min_pool_size" value="1"/>
<property name="hibernate.c3p0.max_pool_size" value="5"/>
    </properties>
  </persistence-unit>
</persistence>