The Builder pattern is a creational design pattern that separates the construction of an object from its representation. It allows you to create complex objects step by step and provides a flexible way to construct objects with different variations or configurations. The Builder pattern promotes fluent and readable code by providing a clear and concise way to set object properties. Here is an example of implementing the Builder pattern in Java:
The Product class represents the object we want to construct. It has several properties and corresponding getter/setter methods.
The ProductBuilder class provides a fluent API to build the Product object. It has methods for setting each property and returns the builder instance, allowing method chaining.
The ProductBuilder constructs a Product object by setting its properties using the provided setter methods.
The Client class demonstrates how to use the builder to construct a Product object with a specific configuration. It invokes the builder methods in a chain and finally calls the build() method to obtain the constructed Product instance.
The constructed Product object is then printed to showcase the final result.
By using the Builder pattern, you can create complex objects with various configurations in a more readable and maintainable way. It simplifies the object creation process and allows you to easily adjust or extend the construction process without modifying the client code.