JAXB - generation of extra java class.

Hi Everyone,
JDK 5, JWSDP 1.6
My XML Schema is:
<?xml version="1.0" encoding="UTF-8" ?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
               elementFormDefault="qualified">
<xsd:element name="Participant">
     <xsd:complexType>
          <xsd:sequence>
            <xsd:element name="ParticipantID" type="xsd:string"/>
            <xsd:element name="FirstName" type="xsd:string"/>
            <xsd:element name="LastName" type="xsd:string"/>
            <xsd:element name="Location" type="xsd:string"/>
            <xsd:element name="RoleID" type="xsd:string"/>
            <xsd:element name="EmailAddress" type="xsd:string"/>
            <xsd:element name="MobileNumber" type="xsd:string"/>
          </xsd:sequence>
     </xsd:complexType>
</xsd:element>
</xsd:schema>When I run JAXB I get an extra Participant.java class generated along with a ParticipantType.java class. Participant.java extends ParticipantType.java. Why is it necessary to generate this extra interface? Wouldn't ParticipantType.java suffice?
TIA,
Claire.

probably, but using interfaces reduces the dependencies between client code and jaxb implementation, so as always, interfaces are a good thing.

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JAXB - generation of extra java class.

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