Template method design pattern

What is the template method design pattern?

The template method design pattern defines the skeleton of an algorithm in the superclass but lets subclasses override the algorithm without changing its structure. It is a behavioral design pattern

Advantages of template method design pattern:

• We can let clients override only certain parts of a large algorithm, making them less affected by changes that happen to other parts of the algorithm.
• We can pull the duplicate code into a superclass.
• Code reuse happens with the Template Method pattern as it uses inheritance and not composition
• Flexibility lets subclasses decide how to implement steps in an algorithm

Disadvantages of template method design pattern:

• Template methods tend to be harder to maintain the more steps they have
• We might violate the Liskov Substitution Principle by suppressing a default step implementation via a subclass
• Debugging and understanding the sequence of flow in the Template Method pattern can be confusing

Difference between Template method and Strategy design pattern