I need help with persisting objects to the database

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Java

I have a simple project to save data to the database. I have successfully mapped the java class with the database table. The code displays no error, it runs very well but it does not save to database, instead it catches an exception and prints out “saving failed”. The database is a mysql database. I have no idea what could be wrong

This is the managed bean code. Save.java(name=”bean”)

//imports
 
@ManagedBean(name="bean")
@RequestScoped
public class Save {
 
    private String username,password,msg;
 
    Session session = null;
    Transaction transaction = null;
 
//GETTERS AND SETTERS
 
    public Save() {
    }
 
    public void saving(){
 
 
    try{
 
         SessionFactory  sessionFactory= new Configuration().configure().buildSessionFactory();
         session = sessionFactory.openSession();
         transaction = session.beginTransaction();
         msg="Saving Record";
         Save sve = new Save();
         sve.setPassword(password);
         sve.setUsername(username);
         session.save(sve);
         transaction.commit();
         session.flush();
         session.close();
         msg="Record Saved";
 
    }
    catch(Exception e){
 
        msg="Saving Failed";
    }               
 
   }
}

This is my Hibernate configuration file

<hibernate-configuration>
  <session-factory>
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/login</property>
    <property name="hibernate.connection.username">root</property>
    <property name="hibernate.connection.password">12345</property>
    <mapping resource="HibernateFiles/Credentials.hbm.xml"/>
  </session-factory>
</hibernate-configuration>