11.2 Obtaining tools for a Java-based Help system
You will need Java Standard Edition (Java SE): version 2 or later for JavaHelp, version 5 or later for Oracle Help. Download the Java SE from this site:
http://www.oracle.com/technetwork/java/javase/downloads/index.html
Note: Install Java SE in a directory with no spaces in the path name; otherwise you will have to modify some of the scripts that accompany the Help tools, to enclose the path name in double quotes.
Download Oracle Help for Java from this site:
http://www.oracle.com/technetwork/topics/ohj50ext-089966.html
Download JavaHelp from this site:
http://download.java.net/javadesktop/javahelp/
Note: Install JavaHelp in a directory with no spaces in the path name.
Supposedly, eventually JavaHelp downloads should be available here:
http://java.net/projects/javahelp/
However, it does not appear that this site is maintained.
For both Help systems the software is free, and can be redistributed.
> 11 Generating JavaHelp or Oracle Help > 11.2 Obtaining tools for a Java-based Help system