Template Method Design Pattern Explained
Streamline a Process with Customizability
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Introduction
The Template Method design pattern is a behavioral pattern that defines the skeleton of an algorithm in a base class, allowing subclasses to override specific steps without changing the algorithm’s structure. This pattern is particularly useful when you want to define the overall structure of a process while letting subclasses customize certain steps. In this article, we’ll explore how the Template Method pattern can be applied to baking cakes, with different types of cakes (e.g., Chocolate Cake and Vanilla Cake) following a common baking process. We’ll see how this pattern promotes code reuse and flexibility by adhering to a consistent template.
Implementation
- Define the Abstract Class: Create an abstract class that outlines the template method, which defines the sequence of steps. In our case,
Cake
is the abstract class with abakeCake()
method that defines the steps to bake a cake.
abstract class Cake {
void prepareIngredients();
void bake();
void cool();
void decorate();
// Template method…