File: Schema.xsd <?xml version="1.0"?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.java2s.com" xmlns="http://www.java2s.com" elementFormDefault="qualified"> <xs:element name="payday" type="xs:recurringDay" /> </xs:schema> File: Data.xml <?xml version="1.0"?> <payday>---30</payday>