XBinder uses the XML Pull Parser pre-deployed on the Android device. You will likely find the implementation of XmlPull does not support DTD or entity reference replacement (except for the predefined entities such as &) and therefore XBinder will not support these either.

Pattern facets are not validated when using the -cldc option with XBinder. Java ME does not provide a regular expression facility, and we chose not to increase the size of our runtime further by adding support for regular expressions.

Trimmed API. Our replacement classes are not full replacements of their Java SE counterparts. In many cases, we have trimmed down the API to keep the size smaller. For example, methods in XMLGregorianCalendar that rely on GregorianCalendar are not present.

Nillable elements are not supported. This is because they are implemented using generics.