java - JAXB, how to validate nillable and required field when unmarshalling -

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i have small problem jaxb, unfortunately not able find answer.

i have class customer, 2 fields name , city, mapping done using annotations , both fields marked required , not nillable.

@xmlrootelement(name = "customer") public class customer {      enum city {         paris, london, warsaw     }      @xmlelement(name = "name", required = true, nillable = false)     public string name;     @xmlelement(name = "city", required = true, nillable = false)     public city city;      @override     public string tostring(){         return string.format("name %s, city %s", name, city);     } } 

however, when submit such xml file:

<customer>     <city>unknown</city> </customer> 

i receive customer instance both fields set null.

shouldn't there validation exception or missing in mapping?

to unmarshal use:

jaxbcontext jaxbcontext = jaxbcontext.newinstance(customer.class); unmarshaller unmarshaller = jaxbcontext.createunmarshaller(); customer customer = (customer) unmarshaller.unmarshal(in); 

you need use schema validate. jaxb can't validation on own.

schemafactory sf = schemafactory.newinstance(javax.xml.xmlconstants.w3c_xml_schema_ns_uri); schema schema = sf.newschema(classutils.getdefaultclassloader().getresource(schemapath)); unmarshaller.setschema(schema);