From the course: Spring: Design Patterns
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Decorator pattern in action
- [Instructor] So, we've talked at a high level about the decorator and how it's used. Let's jump into code and take a look at its actual implementation. We're going to start with our base package in scr/main/java. And we're going to create a new package. This time, called decorator. Now, one of the easiest examples to use of a decorator is the concept of a pizza. And that's what we're going to do. So, we will create a class of Name: Pizza. And we will make that class abstract. Now, we're going to add a protected string on here, called description. And then we will create a public string, getDescription method, that will return that description. Then we're going to put a public abstract method, that returns a BigDecimal, called getCost. Okay. So, now we've got our pizza. So, let's create a concrete instance of a pizza. And we will create a ThickCrustPizza. Now, we're going to extend Pizza here. And we will create a public ThickCrustPizza constructor. And now, we will implement our…
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