Final answer:
The Bridge pattern is a design pattern that decouples an abstraction from its implementation, allowing the two to vary independently. In the scenario of automating the billing system for South West Car Wash Company, we can apply the Bridge pattern to separate the services provided by the company from the way those services are billed. The Bridge pattern structure consists of an Abstraction, Refined Abstraction, Implementor, and Concrete Implementor. Java code examples are provided to illustrate the implementation of the Bridge pattern.
Step-by-step explanation:
Bridge Pattern Structure:
The Bridge pattern is a design pattern that decouples an abstraction from its implementation, allowing the two to vary independently. In the scenario of automating the billing system for South West Car Wash Company, we can apply the Bridge pattern to separate the services provided by the company from the way those services are billed.
Bridge Pattern Structure:
- Abstraction: Represents the interface that clients use to interact with the services. In this case, it could be an interface called 'CarWashService'.
- Refined Abstraction: Implements the Abstraction interface and acts as a wrapper for the concrete implementations. It could be a class called 'BasicCarWashService'.
- Implementor: Defines the interface for the service implementations. It could be an interface called 'ServiceImplementation'.
- Concrete Implementor: Implements the Implementor interface and provides the actual implementation for different services. Examples could be classes like 'ExteriorWashRinse', 'TriplePolyShineWax', 'UnderbodySpray', etc.
Javacode:
CarWashService.java:
public interface CarWashService {
void calculateCost();
}
BasicCarWashService.java:
public class BasicCarWashService implements CarWashService {
private ServiceImplementation serviceImplementation;
public BasicCarWashService(ServiceImplementation serviceImplementation) {
this.serviceImplementation = serviceImplementation;
}
public void calculateCost() {
serviceImplementation.calculateCost();
}
}
ServiceImplementation.java:
public interface ServiceImplementation {
void calculateCost();
}
ExteriorWashRinse.java:
public class ExteriorWashRinse implements ServiceImplementation {
public void calculateCost() {
// Calculate cost for exterior wash and rinse service
}
}
TriplePolyShineWax.java:
public class TriplePolyShineWax implements ServiceImplementation {
public void calculateCost() {
// Calculate cost for Triple Poly Shine Wax service
}
}
UnderbodySpray.java:
public class UnderbodySpray implements ServiceImplementation {
public void calculateCost() {
// Calculate cost for underbody spray service
}
}
Similarly, you can create classes for other services like window cleaning, mats and upholstery cleaning, hand dry, etc.