Why creational patterns manage object creation in LLD - Quick Recap

Recall & Review

beginner

What is the main purpose of creational design patterns?

Creational design patterns focus on managing how objects are created to make the system more flexible and reusable.

beginner

Why should object creation be managed instead of directly using 'new' in code?

Managing object creation helps control complexity, allows easy changes to object types, and supports better code maintenance.

intermediate

How do creational patterns improve flexibility in software design?

They separate the process of creating objects from their usage, so the system can change object types without affecting other parts.

intermediate

Name two common creational design patterns and their roles.

Factory Method creates objects without specifying exact classes. Singleton ensures only one instance of a class exists.

advanced

How do creational patterns help in managing system scalability?

By controlling object creation, they allow easy addition of new object types and reduce tight coupling, which supports scaling the system.

What is a key benefit of using creational patterns?

A They simplify object creation and improve code flexibility.

B They speed up the execution of all methods.

C They remove the need for classes.

D They automatically fix bugs in code.

Creational patterns simplify and control object creation, making code more flexible and maintainable.

Which creational pattern ensures only one instance of a class exists?

A Factory Method

B Prototype

C Singleton

D Builder

Singleton pattern restricts a class to a single instance.

Why avoid using 'new' directly everywhere in code?

A It causes syntax errors.

B It makes code harder to change and less flexible.

C It slows down the program.

D It uses too much memory.

Direct use of 'new' ties code to specific classes, reducing flexibility and making changes harder.

Which pattern separates object creation from its usage?

A Observer

B Decorator

C Strategy

D Factory Method

Factory Method pattern separates object creation from usage.

How do creational patterns support adding new object types?

A By allowing object creation logic to be changed without affecting other code.

B By hardcoding all object types in one place.

C By removing the need for objects.

D By using global variables.

Creational patterns isolate object creation, so new types can be added easily without changing other parts.

Explain why managing object creation is important in software design.

Think about how changing object creation affects the rest of the code.

Describe how creational patterns help in scaling a software system.

Consider how object creation impacts system growth.