Howto prevent XStream from displaying class="string"?

Is there a way to prevent XStream from displaying something like follows:

<user class="string">user</user>
<password clas开发者_JS百科s="string">password</password>

in an xml output?

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Omitted Fields

For a proper deserialization XStream has to write the complete object graph into XML that is referenced by a single object. Therefore XStream has to find a representation that contains all aspects to recreate the objects.

However, some parts might be superfluous e.g. if a member field is lazy initialized and its content can be easily recreated. In such a case a field can be omitted using XStream.omitField(Class, String).

@See: xStream Documentation