In the quarter century since Java was first introduced ... this series will present some of the main benefits of using design patterns, list the different types of design patterns, and finally ...

Every design pattern identifies a recurring design problem in a specific application context, then offers a generalized, reusable solution that is applicable to different application scenarios.

For example, “How do you perform an operation across a collection of different objects ... Luckily, Java lets you make the Visitor pattern much more flexible so you can add Visitable objects ...