java - Hibernate Schema Export in Eclipse -

i trying learn hibernate cameron mckenzie's book 'hibernate made easy' , have followed steps in book still hitting problem. have following source code user class:

package com.examscam.model; import javax.persistence.entity; import javax.persistence.generatedvalue; import javax.persistence.id; import org.hibernate.cfg.annotationconfiguration; import org.hibernate.tool.hbm2ddl.schemaexport;  @entity public class user {     private long id;     private string password;      @id     @generatedvalue     public long getid() {         return id;     }      public string getpassword() {         return password;     }      public void setid(long id) {         this.id = id;     }      public void setpassword(string password) {         this.password = password;     }      public static void main(string[] args) {         annotationconfiguration config = new annotationconfiguration();         config.addannotatedclass(user.class);         config.configure();         new schemaexport(config).create(true, true);     } } 

i have following hibernate.cfg.xml file:

<?xml version='1.0' encoding='utf-8'?> <!doctype hibernate-configuration public   "-//hibernate/hibernate configuration dtd//en"   "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">  <hibernate-configuration>     <session-factory>          <property name="hibernate.connection.url">jdbc:mysql://localhost/examscam</property>         <property name="hibernate.connection.username">root</property>         <property name="hibernate.connection.password">password</property>         <property name="hibernate.connection.driver_class">com.mysql.jdbc.driver</property>         <property name="hibernate.dialect">org.hibernate.dialect.mysqldialect</property>         <property name="hibernate.transaction.factory_class">org.hibernate.transaction.jdbctransactionfactory</property>         <property name="hibernate.current_session_context_class">thread</property>         <property name="hibernate.show_sql">true</property>      </session-factory> </hibernate-configuration> 

i have following persistence.xml file:

<?xml version="1.0" encoding="utf-8"?> <persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xsi:schemalocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">     <persistence-unit name="welcome1">         <class>com.examscam.model.user</class>     </persistence-unit> </persistence> 

i using mysql, , mysql server instance running.

i not experiencing compilation errors or problems imports.

i have reread instructions in book , cannot see may have inadvertently missed, eg have jdbc drivers , necessary jars.

when attempt run class though, eclipse returns error message

0    [main] error org.hibernate.tool.hbm2ddl.schemaexport  - schema export unsuccessful java.lang.nullpointerexception     @ org.hibernate.util.confighelper.getresourceasstream(confighelper.java:144)     @ org.hibernate.tool.hbm2ddl.schemaexport.execute(schemaexport.java:166)     @ org.hibernate.tool.hbm2ddl.schemaexport.create(schemaexport.java:133)     @ com.examscam.model.user.main(user.java:35) 

[sometimes, returns 1 instead of 0 can't see obvious pattern it.]

can suggest can make work? it's extremely frustrating as, obviously, cannot @ if can't run.

thanks, conor