How to get the content of a DTD ?

Question

(i'm French, please excuse my English)
I'm trying to get the content of the DTD corresponding to the file "fic"
fic is like : "....../XXXXXX.xml"
and contains : <!DOCTYPE composants SYSTEM "test.dtd">
Here is my code :
org.w3c.dom.Document Doc = DBXML.newDocument();
Doc = DBXML.parse(fic);
//Doc is a correctly parsed Document
org.w3c.dom.DocumentType DT = Doc.getDoctype();
System.out.println(DT.getSystemId());
//echo : "test.dtd" so I think that DT is good
System.out.println(DT.getNodeType());
//Echo "10" ==> DocumentType Node
System.out.println(DT.getNotations().getLength());
//Echo "0" !!!!!!!!!
I can't figure why getNotations() can't give me the DTD definitions
Please tell me if I try to use a wrong way or if I missed something.
Thanks a lot ...

Answer 1

getNotations() method returns Dtd NOTATIONS when the NOTATIONS are referenced in the DTD.
Dtd:
<!ELEMENT map (entry*) >
<!ELEMENT entry (#PCDATA)>
<!ATTLIST entry value NOTATION (n1|n2) #REQUIRED>
<!NOTATION n1 SYSTEM "n1-url">
<!NOTATION n2 SYSTEM "n2-url">
/* getNotation() returns NamedNodeMap*/
DocumentType docType=xmlDocument.getDoctype();
System.out.println(docType.getName());
NamedNodeMap nnm=docType.getNotations();
System.out.println((nnm.item(0)).getNodeName());
System.out.println((nnm.item(1)).getNodeName());
System.out.println(docType.getNotations().getLength());
Output:
map
n1
n2
2