Clean Code Fundamentals by Martin Hock

Author:Martin Hock [Martin Hock]
Language: eng
Format: epub
Publisher: leanpub.com
Published: 2020-12-16T00:00:00+00:00

The draw method takes an array of Shape objects and uses a switch statement to determine the shape type and invoke the corresponding draw method. This approach violates the OCP because whenever a new shape type is added, the draw method needs to be modified to include a new case in the switch statement, which results in the method being open for modification.

Compliant Solution

Good code 1 public interface Shape { 2 void draw(); 3 }

The Shape interface is introduced to define the contract for shapes. It declares a single method draw that is responsible for drawing the shape.

Good code 1 public class Square implements Shape { 2 @Override 3 public void draw() {} 4 }

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