Chapter  4

Using Memory Efficiently

Applications spend a significant part of their time dealing with data in memory. While many developers are aware of the need to try to use as little memory as possible on devices like phones or tablets, not all realize the impact of memory usage on performance. In this chapter, you will learn how choosing the right data type and how arranging your data in memory can boost your application's performance. Also, we will review a basic yet often overlooked feature of Java: memory management using garbage collection and references.