May I ask what design pattern is best for this kind of business?

[xufei56789]

[AritraThakurta]

@iluwatar I think it would be best if we use Visitor Design Pattern

[SahithyaCherukuri]

@iluwatar I believe the Factory design pattern better matches this business model (and if you plan on using encapsulation to determine the category of the object, this is the best pattern).

Take a look at this link for more information about Factory Pattern (https://refactoring.guru/design-patterns/factory-method)