First things first:
I have changed my mind (in a small way) on the JavaDoc recommendation.  If you 
have your source files in directories that correspond to the packages, it turns 
out to be *much* easier if you simply copy all of them to some temporary 
directory and run javadoc.exe on all of them at once.  Here is a reminder on 
the (recommended) usage:

javadoc -d .\docs -public *.java

or, if your CLASSPATH environment variable has not been set:

javadoc -classpath hurtzcommon.jar;. -d .\docs -public *.java

This creates a "docs" subdirectory of the current directory and instructs 
javadoc to put the html documentation files in there.  Note that javadoc works 
like javac in that it will create a directory structure for the html files that 
corresponds to their packages.  This at least, is true for most operating systems
and user profiles.  I have not seen this under UNIX, but it seems as though under 
some configurations/versions of Windows, the directory is not created 
automatically.  If this is the case for you, you may receive an error message
like the following:

javadoc: Destination directory not found .docs
1 error

In this case, create the directory manually:

mkdir docs

The -public option instructs javadoc to only generate documentation text for 
public methods and variables (you do not have to provide comments for your 
public variables, however).

Below is a snapshot of what javadoc creates for my own implementation of this 
project.  Note that you will have different file names in many instances 
(TransientRentalInventorySearchEngine vs. FleetingInventorySearchEngine) , and 
in others you may not even have a corresponding class 
(e.g. ServerRequestWrapper).

docs
	+ stylesheet.css
	+ package-list
	+ allclasses-frame.html
	+ allclasses-noframe.html
	+ constant-values.html
	+ deprecated-list.html
	+ help-doc.html
	+ index.html
	+ index-all.html
	+ overview-frame.html
	+ overview-summary.html
	+ overview-tree.html
	+ packages.html
	+ serialized-form.html
	+ edu
		|
		+ cod
			|
			+ cis218
					|
					+ client
					|		+ ActionPanel.html
					|		+ CriteriaPanel.html
					|		+ LocalSearchEngineProxy.html
					|		+ package-frame.html
					|		+ package-summary.html
					|		+ package-tree.html
					|		+ RemoteSearchEngineProxy.html
					|		+ HurtzAgentTerminal.html
					|		+ ResultsPanel.html
					|		+ SearchAgentListener.html
					|		+ SearchEngineProxy.html
					|		+ SearchFrame.html
					+ common
					|		+ Car.html
					|		+ Criteria.html
					|		+ CriteriaImpl.html
					|		+ CriteriaValidationException.html
					|		+ package-frame.html
					|		+ package-summary.html
					|		+ package-tree.html
					|		+ ServerRequestWrapper.html
					+ server
							+ AbstractRentalInventorySearchEngine.CarComparator.html
							+ AbstractRentalInventorySearchEngine.html
							+ ClientHandler.html
							+ HurtzFileSearchEngine.html
							+ HurtzTempSearchEngine.html
							+ package-frame.html
							+ package-summary.html
							+ package-tree.html
							+ HurtzServer.html
							+ HurtzDBCreator.html
							
Once you create the html docs, it is easy to zip them as a single file.  From 
the "docs" directory, execute:

jar -cvf docs.zip .							

This will create a "zip" file with all the javadoc html files in it.  
That's right:  jar and WinZip are compatible.