# Code examples for the 4th edition of "Practical Artificial Intelligence Programming with Java" All code examples can be used either under the LGPL version 3 license or the Apache 2 license. You can buy a copy of the "Practical Artificial Intelligence Programming with Java" (includes PDF, Kindle, and iPad/iPhone formats) at https://leanpub.com/javaai for a minimum price of $3 (recommended price is $6). I get most of the proceeds from sales - this will help fund future writing projects! Please note that as I update the book with corrections and updated material that you can have Leanpub.com automatically notify you when free updates are available.