Object Oriented Design Cheat Sheet from david. A handy guide to the basic principles of Object Oriented Programming and Design. Covers standard and accepted principles, design patterns, and more! This is not intended to teach OOP, but as a reminder for those who already learned.
Might be worth reading when I have a minute:. Java Design Patterns for Interviews is collection of Object oriented design patterns which as an experienced developer you must know before going for a Job Interview.