where is the error

[Samanthi perera]

this is my file structure

D:\PROJECT\Aththa\MyHibernate>dir /B
.classpath
.project
.settings
bin
hibernate.cfg.xml
lib
src

this is my config.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">root</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost/school</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.connection.password">root</property>
        <property name="show_sql">true</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    </session-factory>
</hibernate-configuration>

this is my main class

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.AnnotationConfiguration;
import org.hibernate.cfg.Configuration;


import com.examscam.model.User;


public class Main{

	public static void main(String[] args) {
		
		
		Transaction transaction = null;
		Session s=null;
		try{		
			SessionFactory session=AnnotationConfiguration().configure().buildSessionFactory();
			s=session.openSession();
			transaction=s.beginTransaction();
			User user=new User();
			user.setId(new Long(11));
			user.setPassword("aruna");
			s.save(user);
			transaction.commit();			
		}
		catch (HibernateException e) {
			transaction.rollback();
			e.printStackTrace();
		}
		finally{
			s.close();
		}
	}

	

}

in this main class line AnnotationConfiguration().configure().buildSessionFactory(); gives this error

The method AnnotationConfiguration() is undefined for the type Main
1 quick fix available
Create method Annotationconfiguration

[Devaka Cooray]

Samanthi perera wrote:AnnotationConfiguration().configure().buildSessionFactory()

AnnotationConfiguration is a class. How do you create a new object from a class?

[David Newton]

Please post only the code relevant to the question. This is a compilation error--no configuration file is involved.

[Samanthi perera]

i am using this exaple
http://www.vaannila.com/hibernate/hibernate-example/hibernate-annotations-1.html

[David Newton]

Okay. See the difference? You were already told what the problem was, and the code in the link is not the same as yours where the problem is.

[Jaikiran Pai]

Samanthi perera wrote:i am using this exaple
http://www.vaannila.com/hibernate/hibernate-example/hibernate-annotations-1.html

Did you recheck the code with the example that you took it from? Clearly it's not the same. And Devaka already told you what the problem is with that piece of code.

[Samanthi perera]

ok.I have added new keyword to main class.

anyway when i run the example it gives this error.

log4j:WARN No appenders could be found for logger (org.hibernate.cfg.annotations.Version).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" java.lang.NullPointerException
	at Main.main(Main.java:33)

I think it is not creating sessionfactory ?

[David Newton]

Hard to say, since you don't post the rest of the stack trace. Do you have the annotated class?

[Samanthi perera]

I debug the code

java.lang.ClassNotFoundException
org/hibernate/cfg/AnnotationConfiguration
null

Main [Java Application]	
	Main at localhost:1736	
		Thread [main] (Suspended)	
			ClassNotFoundException(Throwable).<init>(String, Throwable) line: 217	
			ClassNotFoundException(Exception).<init>(String, Throwable) line: not available	
			ClassNotFoundException.<init>(String) line: not available	
			ClassLoader.findBootstrapClass(String) line: not available [native method]	
			Launcher$ExtClassLoader(ClassLoader).findBootstrapClass0(String) line: not available	
			Launcher$ExtClassLoader(ClassLoader).loadClass(String, boolean) line: not available	
			Launcher$AppClassLoader(ClassLoader).loadClass(String, boolean) line: not available	
			Launcher$AppClassLoader.loadClass(String, boolean) line: not available	
			Launcher$AppClassLoader(ClassLoader).loadClass(String) line: not available	
			Launcher$AppClassLoader(ClassLoader).loadClassInternal(String) line: not available	
			Main.main(String[]) line: 19	
	C:\Program Files\Java\jre1.6.0\bin\javaw.exe (Mar 12, 2010 7:58:01 PM)	

[David Newton]

And the libraries you're deploying are...?

Come on: we've been over this stuff many times: TellTheDetails.

[Samanthi perera]

mysql-connector-java-5.0.8-bin
hibernate-annotations
hibernate-commons-annotations
hibernate3
ejb3-persistence

[David Newton]

I'm skeptical, because the error *clearly* indicates which class isn't found.

[Samanthi perera]

now it is change the error

log4j:WARN No appenders could be found for logger (org.hibernate.cfg.annotations.Version).
log4j:WARN Please initialize the log4j system properly.
org.hibernate.HibernateException: /hibernate.cfg.xml not found
	at org.hibernate.cfg.Configuration.getConfigurationInputStream(Configuration.java:1205)
	at org.hibernate.cfg.Configuration.configure(Configuration.java:1229)
	at org.hibernate.cfg.Configuration.configure(Configuration.java:1216)
	at Main.main(Main.java:19)

anyway my Configuration.cfx.xml file in the project folderr

[David Newton]

It should be on the classpath. I don't understand why you have to make this so difficult, over and over.

[Samanthi perera]

I am using Eclips IDE.
I creatred the config file using
File -> New->Other ->Hibernate -> Hibernate Configuration File

[David Newton]

So what? It needs to be on the classpath.

[Samanthi perera]

How to add it to classpath?

[David Newton]

Put it in your source directory?

[Samanthi perera]

i have added.
Still have errors.

Main [Java Application]	
	Main at localhost:4044	
		Thread [main] (Suspended)	
			ClassNotFoundException(Throwable).<init>(String, Throwable) line: 217	
			ClassNotFoundException(Exception).<init>(String, Throwable) line: not available	
			ClassNotFoundException.<init>(String) line: not available	
			ClassLoader.findBootstrapClass(String) line: not available [native method]	
			Launcher$ExtClassLoader(ClassLoader).findBootstrapClass0(String) line: not available	
			Launcher$ExtClassLoader(ClassLoader).loadClass(String, boolean) line: not available	
			Launcher$AppClassLoader(ClassLoader).loadClass(String, boolean) line: not available	
			Launcher$AppClassLoader.loadClass(String, boolean) line: not available	
			Launcher$AppClassLoader(ClassLoader).loadClass(String) line: not available	
			Launcher$AppClassLoader(ClassLoader).loadClassInternal(String) line: not available	
			Main.main(String[]) line: 19	
	C:\Program Files\Java\jre1.6.0\bin\javaw.exe (Mar 12, 2010 9:09:22 PM)	

i add a debug line in
session=new AnnotationConfiguration().configure().buildSessionFactory();
after debug pointer come to this line i press F5.
then this error comes.

[Samanthi perera]

i have added 3306 to the url in config.xml

<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/school</property>

the error is still there

[David Newton]

Do you see the error? There's a class missing.

[Samanthi perera]

Which jar shuold i add?

[David Newton]

I think if you don't know how to figure that out you should take a step back before trying to deal with an ORM, because if you can't figure out how to fix the *simple* things when something goes wrong fixing the *complicated* stuff that can happen in Hibernate is going to be a pretty tall order.

- What class is missing?
- What jar is it in (and how do you know)?
- If you *think* you're deploying that jar, how can you find out if you're right?

[Mark Spritzler]

The answer must be 42

Mark

[Samanthi perera]

what do you mean 42?

[Devaka Cooray]

Mark Spritzler wrote:The answer must be 42

Exactly

[Samanthi perera]

i don't understand what is mean by 42.

[Jeanne Boyarsky]

Samanthi perera wrote:i don't understand what is mean by 42.

42 is the answer to the ultimate question (life the universe and everything) in the Hitchhikers Guide to the Galaxy. It is used as a joke.

[Shashank Acharya]

 Keep Your Directory As
          ui
             -> MainClass
          entity
             -> Bean Class
             -> Bean Class Mapping File
          src
              -> Configuration File (hibernate.cfg.xml)      
              -> Reverse Engineering File(hibernate.reveng.xml)
          util
               -> HibernateUtil Class

 

I tried this in Netbeans 6.8 & I hope it will work in Eclipse.

Another thing please create one HibernateUtil.java in Project as shown at Vaannilla Tutorial.
Don't try to create SessionFactory at main class.Use HibernateUtil class getSessionFactory() Method.