Class1 {
   int id;
   int group_id;
   String name;
}

select t1.name, t2.name from table as t1 inner join table t2 on t1.id=t2.groupd_id

session.createQuery("select t1.name, t2.name from Class1 as t1 inner join Class1 as t2..... ")

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
	"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
	"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com....">
  	<class name="Goods" table="goods">
		<id column="id" name="id">
			<generator class="increment"/>
		</id>
        <property name="groupId" column="group_id"/>
        <property name="name" column="name"/>
    </class>
</hibernate-mapping>

public class Goods {
	
	private Long id = null;
	
        private Long groupId = null;

	private String name = null;
	
	set and get..
}

select t1.name, t2.name from table as t1 inner join table t2 on t1.id=t2.groupd_id