How do you map Java Objects with Database tables?

• First we need to write Java domain objects (beans with setter and getter).
• Write hbm.xml, where we map java class to table and database columns to Java class variables.

• <hibernate-mapping>
    <class name="com.test.User"  table="user">
     <property  column="USER_NAME" length="255" 
        name="userName" not-null="true"  type="java.lang.String"/>
     <property  column="USER_PASSWORD" length="255"
  name="userPassword" not-null="true"  type="java.lang.String"/>
   </class>
  </hibernate-mapping>