Try This 10-2 Creating a Disk-Based Help System
FileHelp.java
In Try This 4-1 you created a Help class that displayed information about Java’s control statements. In that implementation, the help information was stored within the class itself, and the user selected help from a menu of numbered options.
Although this approach was fully functional, it is certainly not the ideal way of creating a Help system. For example, to add to or change the help information, the source code of the program needed to be modified. Also, the selection of the topic by number rather than by name is tedious, and is not suitable for long lists of topics. Here, we will remedy these shortcomings by creating a disk-based Help system.
The disk-based Help system stores ...
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