Doctype not set n XML file

Question

Hi,
Is there a way to create a new DOM document and include the DTD?
I used the following:
docType = DOMimp.createDocumentType("my.dtd", null , "my");
Doc = DOMimp.createDocument(null,ROOT_ITEM, docType);
docType = Doc.getDoctype();
The docType is properly set when retrieving the values:
String s1 = docType.getPublicId();
String s2 = docType.getSystemId();
String s3 = docType.getName();
When, saving the Doc to a file using the JAXP transform, the doctype doesn't appear?
Any help is most welcome. / dzone

Answer 1

Hi dzoneKL,
There is no way of setting or modifying the DOCTYPE declaration in the XML document itself; according to the documentation, this is not allowed by the DOM Level 2 specification. However, you can do it in the javax.xml.Transformer object (this is the object you use to write the xml out):
TransformerFactory tFactory = TransformerFactory.newInstance();
Transformer transformer = tFactory.newTransformer();
transformer.setOutputProperty(javax.xml.transform.OutputKeys.DOCTYPE_SYSTEM, "name.dtd");
...Check the javax.xml.transform.OutputKeys javadoc for more details about the properties you can set for the transformer.
Hope it helps
Giordano