Template Method Pattern

Template Method pattern defines the skeleton of an algorithm, and defer some steps to subclasses. Template Method lets subclasses redefine certain steps of an algorithm without changing the algorithm’s structure.

Implementation checklist

abstract template class – a) defines abstract primitive operations that concrete subclasses define to implement steps of an algorithm. b) implements a template method which defines the skeleton of an algorithm. The template method calls abstract primitive operations and other operations.

concrete class – implements the primitive operations.When a concrete class and its the template method code is called, primitive operations and other operations inside the template method will be executed.

Template Method Pattern

Step 1: create an template class

Step 2: create concrete subclass which extends the template class

Step 3 demo client


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