This appendix introduces the Java Collections Framework.™ You will learn what collections are and how they'll make your job easier and your programs better. You'll learn about the core elements that comprise the Collections Framework: interfaces, implementations, and algorithms.
This appendix also describes the core collection interfaces, which are the heart and soul of the Java Collections Framework. You'll learn general guidelines for effective use of these interfaces, including when to use which interface. You'll also learn idioms for each interface to help you get the most out of the interfaces.
What Is a Collections Framework?
Drawbacks of the Collections Framework
Routine Data Manipulation
Finding Extreme Values
Reasons to Write Your Own Implementation
How to Write a Custom Implementation