I am very very new to Hibernate and I am going through the Hibernate Documentation trying to follow the exercise using Tomcat. I have a HibernateUtil class that uses the Hibernate SessionFactory for creating Hibernate Session. I have a Cat.java and I have a Test.java that has the code that uses the HibernateUtil to get the Hibernate session to try to persist to the Cat table using the setters in Cat. I was able to successfully compile all these classes. I have also added all the hibernate related jars in the classpath and also added Cat explicitly in the classpath(I am not really sure if this is required - it sure did not help solve my problem). However, when I try to run the Test class, I get the error posted below. I have been struggling to get this to work for a long time now. Please help!

Nov 27, 2006 1:48:47 PM net.sf.hibernate.cfg.Environment <clinit>
INFO: Hibernate 2.1.4
Nov 27, 2006 1:48:47 PM net.sf.hibernate.cfg.Environment <clinit>
INFO: hibernate.properties not found
Nov 27, 2006 1:48:47 PM net.sf.hibernate.cfg.Environment <clinit>
INFO: using CGLIB reflection optimizer
Nov 27, 2006 1:48:47 PM net.sf.hibernate.cfg.Configuration configure
INFO: configuring from resource: /hibernate.cfg.xml
Nov 27, 2006 1:48:47 PM net.sf.hibernate.cfg.Configuration getConfigurationInput
Stream
INFO: Configuration resource: /hibernate.cfg.xml
Nov 27, 2006 1:48:47 PM net.sf.hibernate.cfg.Configuration addResource
INFO: Mapping resource: Cat.hbm.xml
Nov 27, 2006 1:48:47 PM HibernateUtil <clinit>
SEVERE: Initial SessionFactory creation failed.
java.lang.NoClassDefFoundError: own/sf/hibernate/examples/quickstart/Cat (wrong
name: Cat)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:12
4)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at net.sf.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:9
9)
at net.sf.hibernate.cfg.Binder.bindClass(Binder.java:81)
at net.sf.hibernate.cfg.Binder.bindRootClass(Binder.java:221)
at net.sf.hibernate.cfg.Binder.bindRoot(Binder.java:1243)
at net.sf.hibernate.cfg.Configuration.add(Configuration.java:249)
at net.sf.hibernate.cfg.Configuration.addInputStream(Configuration.java:
285)
at net.sf.hibernate.cfg.Configuration.addResource(Configuration.java:333
)
at net.sf.hibernate.cfg.Configuration.doConfigure(Configuration.java:990
)
at net.sf.hibernate.cfg.Configuration.doConfigure(Configuration.java:946
)
at net.sf.hibernate.cfg.Configuration.configure(Configuration.java:874)
at HibernateUtil.<clinit>(HibernateUtil.java:18)
at Test.main(Test.java:16)
[code][/code]

Hi aniyathi, the message is indicating you the Cat class isn't in the dir specified in Cat.hbm.xml, It seems obvious but are you sure it is in own/sf/hibernate/examples/quickstart/ dir? and is it a POJO?

I hope it helps

Post Cat.hbm.xml, Cat.java and hibernate configuration

In answer to halconGT, yes, Cat.java is a POJO and it is in
own/sf/hibernate/examples/quickstart/

I am attaching the Cat.hbm.xml, Cat.java and hibernate.cfg.xml.

Thanks!

Cat.hbm.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping>
<class name="own.sf.hibernate.examples.quickstart.Cat" table="cat" >
<id name="id" column="cat_id" unsaved-value="0">
<generator class="identity"/>
</id>


<property column="NAME" name="name" type="java.lang.String" />

<property column="SEX" name="sex" type="java.lang.String" />

<property column="WEIGHT" name="weight" type="java.lang.Float" />

</class>


</hibernate-mapping>


Cat.java

public class Cat {

private String id;
private String name;
private String sex;
private float weight;

public Cat() {
}

public String getId() {
return id;
}

public void setId(String id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getSex() {
return sex;
}

public void setSex(String sex) {
this.sex = sex;
}

public float getWeight() {
return weight;
}

public void setWeight(float weight) {
this.weight = weight;
}

}

hibernate.cfg.xml

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD/EN" "http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">

<hibernate-configuration>

<session-factory>


<property name="connection.datasource">java:comp/env/jdbc/quickstart</property>
<property name="show_sql">false</property>
<property name="dialect">net.sf.hibernate.dialect.DB2400Dialect</property>
<property name="connection.driver_class">com.ibm.as400.access.AS400JDBCDriver</property>
<property name="connection.url">jdbc:as400://MW400T</property>
<property name="connection.username">odbccon</property>
<property name="connection.password">odbccon</property>
<property name="default_schema">maydb</property>

<mapping resource="Cat.hbm.xml" />


</session-factory>

</hibernate-configuration>

Did you put post Cat.java entirely?

Maybe your problem is you must put Cat.java in the package xxx:

package own.sf.hibernate.examples.quickstart.Cat;

public class Cat{

etc-

Hi again guys...
aniyathi have you tested adding the entire resource path in:
?

Thanks

The Cat.hbm.xml is directly under web-inf/classes. So I believe I have given the full path(?).

I did add the package names at the top and something interesting is happening now. I am still getting the NoClassDefFoundError, but it is for the Test.class. I checked the directory and the class file is there. Should I add this specifically to the classpath? I am going to try that. But this is what I am getting right now.

C:\apache-tomcat-6.0.1\webapps\quickstart\WEB-INF\classes\own\sf\hibernate\examp
les\quickstart>javac Cat.java

C:\apache-tomcat-6.0.1\webapps\quickstart\WEB-INF\classes\own\sf\hibernate\examp
les\quickstart>javac HibernateUtil.java
Note: HibernateUtil.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

C:\apache-tomcat-6.0.1\webapps\quickstart\WEB-INF\classes\own\sf\hibernate\examp
les\quickstart>javac Test.java

C:\apache-tomcat-6.0.1\webapps\quickstart\WEB-INF\classes\own\sf\hibernate\examp
les\quickstart>java Test
Exception in thread "main" java.lang.NoClassDefFoundError: Test (wrong name: own
/sf/hibernate/examples/quickstart/Test)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:12
4)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)

Adding the class explicitly to the classpath did not really help.

Hey, a generic suggestion: use an IDE like Netbeans or Eclipse, and not javac.

They'll help you with this classpath etc. issues

Hi again aniyathi, r u adding your Test.hbm.xml resource through hibernate.cfg.xml or in your java code?

Thanks

I do not have a Test.hbm.xml, I only have Cat.hbm.xml and yes, I am adding that through the hibernate.cfg.xml