Mastering Java: The Ultimate Quiz for 'Thinking in Java'

Which design pattern is particularly easy to implement using inner classes?

1. Singleton

2. Factory Method

3. Observer

4. Strategy

The correct answer is: Strategy

The Strategy design pattern is particularly easy to implement using inner classes. Inner classes can act as the "Strategy" objects, allowing an object to delegate its functionality to an inner class instead of having to create separate classes for each possible strategy. Singleton is not a design pattern that typically involves the use of inner classes. A Factory Method is more commonly used with regular classes rather than inner classes. While it is possible to implement an Observer design pattern using inner classes, it is not the design pattern that is known for its easy implementation with inner classes.