Classpath
The classpath is a list of locations where javac and java look for imports.

Packages
A package is a class that is imported; it usually has objects or usable methods. Reuse is a goal.

A package must be placed in a directory where the package's name provides a route from a directory in the classpath.
- The name of a package must match the path to that package from the classpath. Use . instead of \ or/ .

To access my 421 java directory, you must have this for your CLASSATH entry in .bash_profile

 export CLASSPATH=".:/export/home/public/spiegel/cis421/java:$CLASSPATH"