Hibernate annotations gives me a NoSuchMethodError exception

[venkatesh babu]

Hi

I am using the latest version of hibernate

hibernate-distribution-3.3.1 GA

hibernate-annotations-3.4.0 GA

hibernate-tools-3.2.2 Beta 1


I have annotated java entity files that i have mapped in my hibernate.cfg.xml as follows..

<?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="connection.datasource">java:comp/env/jdbc/Test</property>
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="hibernate.show_sql">true</property>
    <property name="hibernate.current_session_context_class">thread</property>
 
    <property name="hibernate.hbm2ddl.auto">create-drop</property>
    <property name="hibernate.format_sql">true</property>
    <mapping class="com.vo.entity.Group"/>
    <mapping class="com.vo.entity.GroupAddress"/>
    <mapping class="com.vo.entity.GroupUsers"/>
    <mapping class="com.vo.entity.User"/>
   <!-- Similarly more mapping classes/-->
  </session-factory>
</hibernate-configuration> 

My project compiles fine, but when i run the project, i get the following error..

 
java.lang.NoSuchMethodError: org.hibernate.util.ReflectHelper.classForName(Ljava/lang/String;Ljava/lang/Class :wink: Ljava/lang/Class;
        at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:800)
        at com.util.db.hibernate.HibernateUtil.<clinit>(HibernateUtil.java:27)
        at com.util.db.UserDB.insertUser(UserDB.java:50) 

My util class is something like this..

public class HibernateUtil {
    private static final SessionFactory sessionFactory;
 
    static {
        try {
            // Create the SessionFactory from standard (hibernate.cfg.xml)
            // config file.
            sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            // Log the exception.
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }
 
    public static Session getSession()
            throws HibernateException {
        return sessionFactory.openSession();
    }
 
} 

Could some one please tell me whats wrong with this and why i am getting the above exception?? Thanks for your help

[Mark Spritzler]

Do you have all the correct jars in your classpath when running it? and it is using the same Java version. Maybe you have the Java compiler in one version and java in another.

do

java -version

and

javac -version

do they both show the same version

Mark

[Cameron Wallace McKenzie]

Are you using a source code management tool?

Make sure the files are not locked or read only. I've seen that cause method not founds before, curiously.

And make sure you're using 3.4 of Annotations in test, build and runtime. 3.4 was just released. It wouldn't surprise me if you've got some 3.3.1 annotation jar files hanging around.

-Cameron McKenzie