Loading Properties from class within a jar file

[Mark]

I am trying to load a properties file from a 
class that is in a jar file that is in the $TOMCAT_HOME/lib directory.

The properties file itself is not in the jar.  It is
in $TOMCAT_HOME/properties, which is
in tomcat's classpath because I added it in
the startup script (I verified that it is listed
in the path at startup).

If I use FileInputStream it works, but only
if I use the full file path.  I obviously would
not like to have to do this.

But if I do the following:

Properties props = new Properties();
try
{
   InputStream is = this.getClass().getResourceAsStream("DB.properties");
   if (is == null)
       throw new Exception("Properties file not found");  
    props.load(is);
}

....


It doesn't work (the exception gets thrown).

Any suggestions on a way to do this that works?

Thanks,

Mark