This section provides a tutorial example on how to use the '-g' option to generate debugging information into the class output files. Debugging information in class file can be used by any debugging tools.
As we see earlier, the "-g" compiler option can be used to control how much debugging information
should be generated into the class files. Here are the choices on how to use this option:
Choice Option Information generated in class
1 -g:none No debug information
2 -g:lines Line number only
3 -g:lines,source Line number & source file
4 (default) Same as #3
5 -g:lines,source,vars Line number, source file & variables
6 -g Same as #5
Of course, the more debugging information you generate in a class file, the more debugging
power you will get when you debug this class. However, once your source code is fully debugged,
you should recompile your code with "-g:none", so that you don't distribute you class file
will any debugging information.
Leaving debugging information in your class file will have the following negative effects:
Class file will be larger - Harder to distribute. Longer time to load.
Easier for others to reverse engineer your source code.
