At the core of designing object-oriented Java programs is a thorough knowledge of design patterns. In this course, Design Patterns in Java: The Big Picture, you'll get a broad and high-level overview of design patterns as defined by the Gang of Four. First, you will learn what are design patterns and why they are important. Next, you'll explore the main design behavioral, creational, and structural patterns. Finally, you'll discover how to these patterns are the basics of other design patterns. When you're finished with this course, you'll have a foundational knowledge of design patterns that will help you as you move forward to design object-oriented programs in Java.