How to read SGML files using Java

I've got a text categorisation test collection called Reuters-21578 for my Information Retrieval project. It is distributed in 22 files. Each of the first 21 files (reut2-000.sgm through reut2-020.sgm) contains 1000 documents, while the last (reut2-021.sgm) contains 578 documents. The files are in SGML format. Each of the 22 files begins with a document type declaration line:
<!DOCTYPE lewis SYSTEM "lewis.dtd"> The DTD file lewis.dtd is included in the distribution. Following the document type declaration line are individual Reuters articles marked up with SGML tags.
My questions is how to write a java program to read those 21578 documents or transform them into 21578 seperated text files.

I guess I missed something. What is Renes link?. The
parser stuff isn't really what I'm looking for. I'm
a new at and just learning java and I just want to
know the easiest way to read a SGML file. Should I
use a buffered Reader with a Pushback Input Stream?Hang on.....you want to just read the file without intelligently extracting the SGML data contained within and so have no need of a parser?
Well, in that case, its just text.....so just use BufferedReader or whatever to read the text data. If I understand you correctly, all you really wanted to ask was "how do I read a text file?"

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