refining DC.relation w/ Jena

Allow me two questions:

[1] Is this the right way to implement in Jena the refinements of the DC 
vocabulary?

	Property isPartOf = m.createProperty(DC.relation + ".isPartOf");

...which results in the following line in RDF:

	<dc:relation.isPartOf rdf:resource='http://foo.bar#barefoot'/>



[2] Do I have to build valid absolute URIs by myself? -- like in

     Resource foo = m.createResource("http://foo.bar#localfool");

or is there some method where I could say

     Resource foo = m.createResource("localfool");


TIA, david

Jena-1.3.0