Crimson and DTDs

Question

Hi!
I'm having problems with Crimson in combination with documents validated using an external DTD. I'm usinf JAXP 1.1. Basically I get an exception:
Exception in thread "main" java.lang.NoSuchMethodError
     at org.apache.crimson.tree.XmlDocumentBuilder.startDTD(XmlDocumentBuilder.java:648)
     at org.apache.crimson.parser.Parser2.maybeDoctypeDecl(Parser2.java:1118)
     at org.apache.crimson.parser.Parser2.parseInternal(Parser2.java:488)
     at org.apache.crimson.parser.Parser2.parse(Parser2.java:304)
     at org.apache.crimson.parser.XMLReaderImpl.parse(XMLReaderImpl.java:433)
     at org.apache.crimson.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:179)
     at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:161)
I'm using the following bit of code:
DocumentBuilderFactory fac = DocumentBuilderFactory.newInstance();
builder = fac.newDocumentBuilder();
doc = builder.parse(new File(filename));
Is that a Crimson error or am I doing something wrong? Maybe I have messed up different versions of DOM, JAXP, ... libraries?!
I'm doing that to compare different implementations, and it works fine with Xerces and my own one. I thought it is strange that exactly the JAXP default parser would fail on this task.
Any thoughts?
Mathias

Answer 1

I had a problem like yours. Apparently, the "parse" method have a little problem with a "file" object as a parameter try this, it worked with me :
File fl = new File(strFileName);
doc = builder.parse(new FileInputStream(fl));
San_A