Java APIs

I'm a beginner, and I'm trying to use the @ comments (@author, @version, @return, etc...) to create an HTML comment file that according to my book is built into the technology of the compiler (which to me means that it'd create the HTML file in the same place it creates the class file). Anyway, i've tried this a few ways, and I haven't got the HTML file created yet. Any ideas what I might be doing wrong?