Initial SessionFactory creation failed. java.lang.AbstractMethodErro

[sivasakam kumarsakam]

sivasakam kumarsakam wrote:thanks sir for your reply... here is total program code...(I am using Eclipse and Hibernate3)

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>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.password">123456</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost/siva</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="show_sql">true</property>
        <mapping resource="com/vaannila/course/Course.hbm.xml"/>
    </session-factory>
</hibernate-configuration>

Course.hbm.xml

 
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
	"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
	"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
	<class name="com.vaannila.course.Course" table="COURSES">
		<meta attribute="class-description">
			This Class contains Course Details.
		</meta>
		<id name="courseId" type="long" column="COURSE_ID">
			<generator class="native"/>
		</id>
		<property name="courseName" type="string" column="COURSE_NAME" not-null="true"/>
	</class>
</hibernate-mapping>

Course.java

  
package com.vaannila.course;

// Generated 6 Feb, 2010 2:57:30 PM by Hibernate Tools 3.2.4.GA

/**
 * 			This Class contains Course Details.
 * 		
 */
public class Course implements java.io.Serializable {

	private long courseId;
	private String courseName;

	public Course() {
	}

	public Course(String courseName) {
		this.courseName = courseName;
	}

	public long getCourseId() {
		return this.courseId;
	}

	public void setCourseId(long courseId) {
		this.courseId = courseId;
	}

	public String getCourseName() {
		return this.courseName;
	}

	public void setCourseName(String courseName) {
		this.courseName = courseName;
	}

}

Main.java

package com.vaannila.course;

import java.util.List;
import java.util.Iterator;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;

import com.vaannila.util.HibernateUtil;

public class Main {
	public static void main(String[] args){
		Main obj=new Main();
		Long courseId1=obj.saveCourse("Physics");
		Long courseId2=obj.saveCourse("Chemistry");
		Long courseId3=obj.saveCourse("Maths");
		obj.listCourse();
		obj.updateCourse(courseId3,"Mathematics");
		obj.deleteCourse(courseId2);
		obj.listCourse();
	}	

	public Long saveCourse(String courseName) {
		Session session=HibernateUtil.getSessionfactory().openSession();
		Transaction transation=null;
		Long courseId=null;
		try{
			transation=session.beginTransaction();
			Course course=new Course();
			course.setCourseName(courseName);
			courseId=(Long)session.save(course);
			transation.commit();
		}catch(HibernateException ex){
			transation.rollback();
			ex.printStackTrace();
		}finally{
			session.close();
		}
		
		return courseId;
	}
	
	public void listCourse() {
		Session session=HibernateUtil.getSessionfactory().openSession();
		Transaction transaction=null;
		try{
			transaction=session.beginTransaction();
			List courses=session.createQuery("from Course").list();
			for(Iterator iterator=courses.iterator(); iterator.hasNext();){
				Course course=(Course)iterator.next();
				System.out.println(course.getCourseName());
			}
		}catch(HibernateException e){
			transaction.rollback();
			e.printStackTrace();
		}finally{
			session.close();
		}
	}
	
	public void updateCourse(Long courseId,String courseName){
		Session session=HibernateUtil.getSessionfactory().openSession();
		Transaction transaction=null;
		try{
			transaction=session.beginTransaction();
			Course course=(Course)session.get(Course.class, courseId);
			course.setCourseName(courseName);
			transaction.commit();
		}catch(HibernateException e){
			transaction.rollback();
			e.printStackTrace();
		}finally{
			session.close();
		}
	}
	
	public void deleteCourse(Long courseId){
		Session session=HibernateUtil.getSessionfactory().openSession();
		Transaction transaction=null;
		try{
			transaction=session.beginTransaction();
			Course course=(Course)session.get(Course.class, courseId);
			session.delete(course);
			transaction.commit();
		}catch(HibernateException e){
			transaction.rollback();
			e.printStackTrace();
		}finally{
			session.close();
		}
	}
}

HibernateUtil.java

package com.vaannila.util;

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

public class HibernateUtil {
	private static final SessionFactory sessionFactory;
	static{
		try{
			sessionFactory=new Configuration().configure().buildSessionFactory();
		}catch(Throwable ex){
			System.err.println("Initial SessionFactory creation failed. "+ex);
			throw new ExceptionInInitializerError(ex);
		}
	}
	public static SessionFactory getSessionfactory() {
		return sessionFactory;
	}	
}

error
26 [main] INFO org.hibernate.cfg.Environment - Hibernate 3.3.2.GA
29 [main] INFO org.hibernate.cfg.Environment - hibernate.properties not found
35 [main] INFO org.hibernate.cfg.Environment - Bytecode provider name : javassist
42 [main] INFO org.hibernate.cfg.Environment - using JDK 1.4 java.sql.Timestamp handling
152 [main] INFO org.hibernate.cfg.Configuration - configuring from resource: /hibernate.cfg.xml
152 [main] INFO org.hibernate.cfg.Configuration - Configuration resource: /hibernate.cfg.xml
288 [main] INFO org.hibernate.cfg.Configuration - Reading mappings from resource : com/vaannila/course/Course.hbm.xml
400 [main] INFO org.hibernate.cfg.HbmBinder - Mapping class: com.vaannila.course.Course -> COURSES
419 [main] INFO org.hibernate.cfg.Configuration - Configured SessionFactory: java:hibernate/SessionFactory
Initial SessionFactory creation failed. java.lang.AbstractMethodError: org.slf4j.impl.SimpleLogger.isTraceEnabled()Z
java.lang.AbstractMethodError: org.slf4j.impl.SimpleLogger.isTraceEnabled()Z
at org.hibernate.type.NullableType.<clinit>(NullableType.java:59)
at org.hibernate.Hibernate.<clinit>(Hibernate.java:103)
at org.hibernate.type.TypeFactory.<clinit>(TypeFactory.java:69)
at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:283)
at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:276)
at org.hibernate.mapping.Property.isValid(Property.java:207)
at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:458)
at org.hibernate.mapping.RootClass.validate(RootClass.java:215)
at org.hibernate.cfg.Configuration.validate(Configuration.java:1149)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1334)
at com.vaannila.util.HibernateUtil.<clinit>(HibernateUtil.java:11)
at com.vaannila.course.Main.saveCourse(Main.java:25)
at com.vaannila.course.Main.main(Main.java:15)
Exception in thread "main" java.lang.ExceptionInInitializerError
at com.vaannila.util.HibernateUtil.<clinit>(HibernateUtil.java:16)
at com.vaannila.course.Main.saveCourse(Main.java:25)
at com.vaannila.course.Main.main(Main.java:15)
Caused by: java.lang.AbstractMethodError: org.slf4j.impl.SimpleLogger.isTraceEnabled()Z
at org.hibernate.type.NullableType.<clinit>(NullableType.java:59)
at org.hibernate.Hibernate.<clinit>(Hibernate.java:103)
at org.hibernate.type.TypeFactory.<clinit>(TypeFactory.java:69)
at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:283)
at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:276)
at org.hibernate.mapping.Property.isValid(Property.java:207)
at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:458)
at org.hibernate.mapping.RootClass.validate(RootClass.java:215)
at org.hibernate.cfg.Configuration.validate(Configuration.java:1149)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1334)
at com.vaannila.util.HibernateUtil.<clinit>(HibernateUtil.java:11)
... 2 more

[/code]

thanks sir.....