hibernate query cache

Hi,

I am running hibernate query cache example as below

my hibernate config file looks as below

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

<hibernate-configuration>
<session-factory>
  <property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
  <property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/hibernatedb</property>
  <property name="hibernate.connection.username">postgres</property>
  <property name="hibernate.connection.password">root</property>
  <property name="hibersnate.connection.pool_size">10</property>
  <property name="show_sql">true</property>
  <property name="dialect">org.hibernate.dialect.PostgreSQLDialect</property>
  <!--  second level cache enable after download jars -->
  <property name="cache.use_second_level_cache">true</property>
    <property name="cache.use_query_level_cache">true</property>
  <property name="cache.provider_class">org.hibernate.cache.EhCacheProvider</property>
  <property name="hibernate.hbm2ddl.auto">create</property> 
  <mapping class="org.gp.gpr.dto.UserDetails"/>  
   <mapping class="org.gp.gpr.dto.Vehicle"/> 
   <mapping class="org.gp.gpr.dto.TwoWheeler"/> 
   <mapping class="org.gp.gpr.dto.FourWheeler"/> 
   </session-factory>
</hibernate-configuration>


USerDetails looks as below

package org.gp.gpr.dto;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.HashSet;
import java.util.Set;

import javax.persistence.AttributeOverride;
import javax.persistence.AttributeOverrides;
import javax.persistence.Cacheable;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.ElementCollection;
import javax.persistence.Embedded;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.Lob;
import javax.persistence.ManyToMany;
import javax.persistence.NamedQuery;
//import javax.persistence.NamedQuery;
import javax.persistence.OneToMany;
import javax.persistence.OneToOne;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.persistence.Transient;

import org.hibernate.annotations.Cache;
import org.hibernate.annotations.CacheConcurrencyStrategy;
import org.hibernate.annotations.CollectionId;
import org.hibernate.annotations.GenericGenerator;
import org.hibernate.annotations.NamedNativeQuery;
import org.hibernate.annotations.Type;

//import org.hibernate.annotations.Entity;

@Entity
@Cacheable
@Cache(usage=CacheConcurrencyStrategy.READ_ONLY)
@NamedQuery(name="UserDetails.byId", query="from UserDetails where userId=?")
//@NamedNativeQuery(name="UserDetails.byName", query="select * from User_Details where username=?", resultClass=UserDetails.class)
@org.hibernate.annotations.Entity(selectBeforeUpdate=true)
public class UserDetails {
@Id @GeneratedValue(strategy=GenerationType.AUTO)
private int userId;
private String userName;

public int getUserId() {
	return userId;
}
public void setUserId(int userId) {
	this.userId = userId;
}

public String getUserName() {
	return userName+"from get";
}


public void setUserName(String userName) {
	this.userName = userName;
}




}
Hibernate client java looks as below

package org.gp.gpr.hibernate;

import java.util.Date;
import java.util.List;

import org.gp.gpr.dto.UserDetails;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class Hibernate2ndCache {

public static void main(String[] args){

	SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
	Session session=sessionFactory.openSession();
	session.beginTransaction();
	
Query query=session.createQuery("from UserDetails user where user.userId=1");
query.setCacheable(true);
List users=query.list();

	session.getTransaction().commit();
	session.close();

	
	
	Session session2=sessionFactory.openSession();
	session2.beginTransaction();
	
	
Query query2=session.createQuery("from UserDetails user where user.userId=1");
query2.setCacheable(true);
users=query2.list();
	
	//UserDetails user2=(UserDetails) session.get(UserDetails.class, 1);
	session.getTransaction().commit();
	session.close();

	
	
}
}

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When I run the client jav afile getting below error.

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Hibernate: select userdetail0_.userId as userId0_, userdetail0_.userName as userName0_ from UserDetails userdetail0_ where userdetail0_.userId=1
Exception in thread "main" org.hibernate.SessionException: Session is closed!
      at org.hibernate.impl.AbstractSessionImpl.errorIfClosed(AbstractSessionImpl.java:72)
      at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1768)
      at org.gp.gpr.hibernate.Hibernate2ndCache.main(Hibernate2ndCache.java:33)



How can i fix this error

Please advise. Any ideas, resources, sample code highly appreciated. thanks in advance
HibernateQueryCache.jpg