Chapter 3 – Working with Creational Design Patterns

1. Creational design patterns help abstract the object instantiation process by delegating it to the responsible part of the application.
2. 2. To reduce new object creation costs, the dependency injection, lazy initiation, and object pool patterns may be taken into consideration.
3. Only one instance is required to be present in JVM.
4. The builder pattern helps create configurations of a similar object type while reducing the number of constructors.
5. The factory method or abstract factory patterns should be considered, as both can compose complex objects without exposing the logic to the clients.
6. The object pool design pattern introduces a cache of already created and reusable objects instead of allocating and destroying new instances.
7. The most useful pattern for creating objects of a specific family is the factory method pattern.