A: those file sizes are exactly correct and the files should uncompress fine. The decompression command "tar zxvf ...", which I mention on the software page is a shorthand and only works on certain UNIX systems. If that is what gives you trouble, try

gunzip -c archive.tar.gz | tar xvf -

In case you are on a WinXX machine: try using either the latest WinRAR,or WinZIP (go to google to find out where to download these programs). The former should definitely work.

Sometimes there is also a problem with the browser you use to download the files: sometimes the last file extension gets lost during a download process. Make sure the archives end with ".tar.gz". If not, rename the downloaded file(s) accordingly.

-- ToniRath - 29 Sep 2003

Q: I get the following error message (or a similar one) when I run

A: Your classpath is not set correctly. Go through the list on the software installation page and make sure you downloaded all files to the correct locations and then set your classpath as described.

-- ToniRath - 25 Sep 2003

• Q: I get the following error message (or a similar one) when I run

• A: Your classpath is not set correctly. Go through the list on the software installation page and make sure you downloaded all files to the correct locations and then set your classpath as described.

On Windows systems, your classpath needs to be set as follows: go to a command window (e.g. Start->Run->type "command" and hit return) type the following lines (or even better: put them into a .bat file and execute it). You have to replace by the path where you unpacked lucene-1.2.tar.gz and the xerces package, e.g. "C:\CS646":

set CLASSPATH=%CLASSPATH%;<YOURCS646FOLDER>\lucene-1.2\lucene-1.2.jar
set CLASSPATH=%CLASSPATH%;<YOURCS646FOLDER>\lucene-1.2\lucene-demos-1.2.jar
set CLASSPATH=%CLASSPATH%;<YOURCS646FOLDER>\xerces-2_5_0\xml-apis.jar
set CLASSPATH=%CLASSPATH%;<YOURCS646FOLDER>\xerces-2_5_0\xml-Parser.jar
set CLASSPATH=%CLASSPATH%;<YOURCS646FOLDER>\xerces-2_5_0\xercesImpl.jar
set CLASSPATH=%CLASSPATH%;.