Table of Contents
- 1 What are the consequences of applying the GOF factory method pattern?
- 2 Why would a factory method design pattern be a more appropriate design than an abstract factory design pattern?
- 3 What are the advantages of simple factory?
- 4 What is the advantage of Singleton design pattern?
- 5 What does factory method do?
- 6 What is difference between factory and abstract factory?
- 7 What is the difference between concrete and abstract classes in Java?
- 8 How to multiply factors to multiply per cubic on concrete class mixtures?
What are the consequences of applying the GOF factory method pattern?
Here are two additional consequences of the Factory Method pattern:
- Provides hooks for subclasses. Creating objects inside a class with a factory method is always more flexible than creating an object directly.
- Connects parallel class hierarchies.
Why would a factory method design pattern be a more appropriate design than an abstract factory design pattern?
The idea behind the Factory Method pattern is that it allows for the case where a client doesn’t know what concrete classes it will be required to create at runtime, but just wants to get a class that will do the job while Abstract Factory pattern is best utilized when your system has to create multiple families of …
What are the advantages of using abstract factory pattern?
Advantage of Abstract Factory Pattern
- Abstract Factory Pattern isolates the client code from concrete (implementation) classes.
- It eases the exchanging of object families.
- It promotes consistency among objects.
What are the pros and cons of factory design pattern?
The pros and cons of the factory method design pattern
| Advantages | Disadvantages |
|---|---|
| Modular expandability of the application | High number of required classes |
| Good testability | Extension of the application is very elaborate |
| Significant method names |
What are the advantages of simple factory?
The Advantages of the Simple Factory Pattern
- It provides an elegant way to abstract your code so there’s less visual clutter.
- It allows you to introduce specialized, focused classes with a single purpose (which is great if you follow the SOLID principles)
What is the advantage of Singleton design pattern?
Instance control: Singleton prevents other objects from instantiating their own copies of the Singleton object, ensuring that all objects access the single instance. Flexibility: Since the class controls the instantiation process, the class has the flexibility to change the instantiation process.
What is the disadvantage in the factory method?
Example 2. Abstract Factory Pattern generally uses composition to delegate the responsibility of object instantiation to another object; i.e., the CreateUI() method takes a reference of the Abstract Factory class.
What advantage a factory method provides that a simple factory is unable to?
Factory Method requires subclassing, but doesn’t require Initialize. The advantage of a Factory Method is that it can return the same instance multiple times, or can return a subclass rather than an object of that exact type. The new operator always creates an object, and fails to encapsulate object creation.
What does factory method do?
Factory Method is a creational design pattern that provides an interface for creating objects in a superclass, but allows subclasses to alter the type of objects that will be created.
What is difference between factory and abstract factory?
The main difference between a “factory method” and an “abstract factory” is that the factory method is a single method, and an abstract factory is an object. The factory method is just a method, it can be overridden in a subclass, whereas the abstract factory is an object that has multiple factory methods on it.
What is the difference between factory pattern and abstract factory pattern?
The main difference between factory pattern and abstract factory pattern is that the factory pattern provides a method of creating objects without specifying the exact class used to create it while the abstract factory pattern provides a method to combine a group of individual factories without specifying their …
What is the difference between abstract factory and concrete factory?
The abstract factory is decomposed in more interfaces in order to take full advantage of Interface Segregation Principle. The concrete factory is defined in a separated project. The application is run by a simple console application.
What is the difference between concrete and abstract classes in Java?
The only real difference is that a concrete class can be instantiated because it provides (or inherits) the implementation for all of its methods. An abstract class cannot be instantiated because at least one method has not been implemented. Abstract classes are meant to be extended.
How to multiply factors to multiply per cubic on concrete class mixtures?
Handy guide on factors to multiply per cubic on different concrete class mixtures. Just multiply each factor to the total volume (in cubic meter) and you’ll get the needed amount of cement (40Kg/bag), sand (cu.m.) and gravel (cu.m.). The following factors were already added an average wastage add-ons of around 5\% to 8\%.
Which building materials are better than concrete?
11 green building materials that are way better than concrete. 1 1. Straw Bales. Rather than relying on new research and technology, straw bale building hearkens back to the days when homes were built from natural, 2 2. Grasscrete. 3 3. Rammed Earth. 4 4. HempCrete. 5 5. Bamboo.