Java EE (Java Enterprise Edition) General Discussion

I am using a xerces-1_2_2 parser.
I have included my External Dtd Reference in my xml file as

<!DOCTYPE Store SYSTEM "Store.dtd">

This gives me an error saying that the dtd file is not found in file:///...path of my xml file when i run it through command promt.And when i use Apache Tomacat, it closes the window (terminates the application)

But when i write
<!DOCTYPE Store SYSTEM "file:///C:/Store.dtd"> it does not throw any error but proceeds normally..

Why is this so??? All examples on the web don't mention file:/// protocol


Can someone please help me out. It is very urgent.

Thanks.