<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
   <session-factory>
      
      <property name="connection.characterEncoding">UTF-8</property>
      <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
      <property name="connection.url">jdbc:mysql://localhost:3306/tricky</property>
      <property name="connection.username">root</property>
      <property name="connection.password">admin</property>
      
      <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
      <!-- <property name="current_session_context_class">thread</property> -->
      <mapping resource="com/tricky/vo/User.hbm.xml"/>
   </session-factory>
</hibernate-configuration>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
   <class table="user" >
      <id name="username" column="userid" />   
      <property name="password" column="password" />
   </class>
</hibernate-mapping>

public class User {
   
   private String username;
   private String password;
   /**
    * @return the username
    */
   public String getUsername() {
      return username;
   }
   /**
    * @param username the username to set
    */
   public void setUsername(String username) {
      this.username = username;
   }
   /**
    * @return the password
    */
   public String getPassword() {
      return password;
   }
   /**
    * @param password the password to set
    */
   public void setPassword(String password) {
      this.password = password;
   }
   
}

HibernateUtil.createSessionFactory();

Could not parse mapping document from resource com/tricky/vo/User.hbm.xml