Richard M Reese 
Natural Language Processing with Java [EPUB ebook] 
Explore various approaches to organize and extract useful text from unstructured data using Java

If you are a Java programmer who wants to learn about the fundamental tasks underlying natural language processing, this book is for you. You will be able to identify and use NLP tasks for many common problems, and integrate them in your applications to solve more difficult problems. Readers should be familiar/experienced with Java software development.