This is behavioral design pattern, which means it focus on ways that individual objects collaborate to achieve a common goal.
The Template Method can be helpful if you have 2 classes with similar functionality, which apply generalization principle.
This UML diagram has the essential components: a public template method and abstract methods in the superclass. These abstract methods are implemented in the subclasses. There is also one step common to all: reachDestination. It is private because only the method in the superclass needs to access it.
Step 1: Write a base abstract class.
public abstract class SelfDrivingVehicle {
public sealed void DriveToDestination(){
Accelerate();
Brake();
Steer();
Accelerate();
Brake();
reachDestination();
}
protected abstract void Steer();
protected abstract void Accelerate();
protected abstract void Brake();
private void reachDestination(){
Console.WriteLIne("Destintion reached");
}
}
Step 2: implement subclasses
public class SelfDrivingCar: SelfDrivingVehicle {
protected void Steer(){
Console.WriteLine("Car Steering API");
}
protected void Accelerate(){
Console.WriteLine("Car Accelerate API");
}
protected void Brake(){
Console.WriteLine("Car Brake API");
}
}
public class SelfDrivingMotorcycle: SelfDrivingVehicle {
protected void Steer(){
Console.WriteLine("SelfDrivingMotorcycle Steering API");
}
protected void Accelerate(){
Console.WriteLine("SelfDrivingMotorcycle Accelerate API");
}
protected void Brake(){
Console.WriteLine("SelfDrivingMotorcycle Brake API");
}
}
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