Dear Biojava friends

I have donwnloaded the three files biojava-1.21jar, bytecode-0.90.jar and xerces.ar on my windows2000 machine. I put them in the directory  c:\biojava. I set up the class path CLASSPATH=C:\biojava.jar;C:\xerces.jar;C:\bytecode.jar;.using control panel , system, user variables.
when I compile a demo progra GCContent.java , I get compile err,

biojava/GCContent.java [3:1] package org.biojava.bio.seq does not exist
import org.biojava.bio.seq.*;
^
biojava/GCContent.java [4:1] package org.biojava.bio.seq.io does not exist
import org.biojava.bio.seq.io.*;
^
biojava/GCContent.java [18:1] cannot resolve symbol
symbol  : class SequenceIterator 
location: class GCContent
        SequenceIterator stream = SeqIOTools.readFastaDNA(br);
        ^
biojava/GCContent.java [18:1] cannot resolve symbol
symbol  : variable SeqIOTools 
location: class GCContent
        SequenceIterator stream = SeqIOTools.readFastaDNA(br);
                                  ^
biojava/GCContent.java [23:1] cannot resolve symbol
symbol  : class Sequence 
location: class GCContent
            Sequence seq = stream.nextSequence();
            ^
biojava/GCContent.java [26:1] cannot resolve symbol
symbol  : class Symbol 
location: class GCContent
                Symbol sym = seq.symbolAt(pos);
                ^
biojava/GCContent.java [27:1] cannot resolve symbol
symbol  : variable DNATools 
location: class GCContent
                if (sym == DNATools.g() || sym == DNATools.c())
                           ^
biojava/GCContent.java [27:1] cannot resolve symbol
symbol  : variable DNATools 
location: class GCContent
                if (sym == DNATools.g() || sym == DNATools.c())
                                                  ^
9 errors
Errors compiling GCContent.


I would like to get some help to solve the problem. I am newcomer in java


Dr Yizhou Chen
Room 546 Gunn Building(B19)
Centre for Advanced Technologies in Animal Genetics and Reproduction (Reprogen)
School of Veterinary Science
University of Sydney
Sydney NSW 2006
Phone 61 2 9351 3154
Fax 61 2 9351 2114
email: [EMAIL PROTECTED]
http://www.usyd.edu.au/vetfac/reprogen/
xerces

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