need a .jar file to fix the compilation error?

Hi,
I got the following error when compiling using ant. I searched for "Int2ObjectRBTreeMap" on google and downloaded fastutil.jar to lib/, but the error still appears. Anyone knows which .jar file I need to download to fix the error?

Thanks a lot.

*********

compile:
[javac] Compiling 8 source files to /home/nwlin/test/pubserver/WEB-INF/build
[javac] /home/nwlin/test/pubserver/WEB-INF/src/org/semanticweb/rdf/ModelIntTree.java:213: cannot resolve symbol
[javac] symbol : class Int2ObjectRBTreeMap
[javac] location: class org.semanticweb.rdf.ModelIntTree
[javac] return new Int2ObjectRBTreeMap();
[javac] ^
[javac] 1 error

BUILD FAILED
/home/nwlin/test/pubserver/WEB-INF/build.xml:53: Compile failed; see the compiler error output for details.
[ August 02, 2004: Message edited by: Naiwen Lin ]

Good question, but I don't see how the question is Servlet related.

This forum is for Servlet questions.

Are you sure you have the correct classpath, either in the import statement in the code matching the path in the jar file, or that your classpath will include that jar file. You can open the jar file in Winzip and see if that file exists in the jar, and that the path is correct.

Mark