Graham Hardman & Tony Jenkins 
How to Program Using Java [PDF ebook] 

A humorous and friendly introduction to programming for undergraduate students meeting the subject for the first time. Using Java as a running example, the authors outline the principles of programming that will serve as a valuable foundation in good practice for when students meet other languages in later courses. Packed with cartoons and entertaining examples, this book is an accessible, student-friendly guide to programming for beginners.