Advantages of of using factories to create objects?

The factory can return the same object for same set of parameters. You can create and return any subtype of the type that factory is designed to create.
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• Easy to implement.
• Client application code doesn't have to change drastically.
• Class creation is abstract from the client code.

1. What are the advantages of factory objects?
2. What is the use of an object factory?
3. What advantage a factory method provides that a simple factory is unable to?
4. When factory methods are useful?
5. What are the disadvantages of factory design pattern?
6. What is the disadvantage in the factory method?
7. What is the advantage of Singleton design pattern?
8. What are the benefits of applying abstract factory design pattern?
9. Which of the following is a disadvantage of abstract factory?
10. Why class is known as an object factory?
11. What is the use of factory design pattern?
12. What is the use of an object factory in Java?

What are the advantages of factory objects?

Advantage of Factory Design Pattern

Factory Method Pattern allows the sub-classes to choose the type of objects to create. It promotes the loose-coupling by eliminating the need to bind application-specific classes into the code.

What is the use of an object factory?

Job Description. Typically, an object factory is quite simple and small. Its main role is to collect the information necessary to create an instance of the intended object's class and then to invoke that class's constructor. However, the complexity of the objects that it creates can vary significantly.

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.

When factory methods are useful?

It is good idea to use factory methods inside object when: Object's class doesn't know what exact sub-classes it have to create. Object's class is designed so that objects it creates were specified by sub-classes.

What are the disadvantages of factory design pattern?

One disadvantage of the Factory Method pattern is that it can expand the total number of classes in a system. Every concrete Product class also requires a concrete Creator class. The parameterized Factory Method avoids this downside.

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 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 are the benefits of applying abstract factory design 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.

Which of the following is a disadvantage of abstract factory?

Extending abstract factories to produce new kinds of Products isn't easy. That's because the AbstractFactory interface fixes the set of products that can be created. Supporting new kinds of products requires extending the factory interface, which involves changing the AbstractFactory class and all of its subclasses.

Why class is known as an object factory?

A class is called an object factory because objects are created from the class that contains common attributes and behaviour. The class behaves like a specification for creating such similar objects.

What is the use of factory design pattern?

The Factory Method pattern is a design pattern used to define a runtime interface for creating an object. It's called a factory because it creates various types of objects without necessarily knowing what kind of object it creates or how to create it.

What is the use of an object factory in Java?

An ObjectFactory is responsible for creating objects of a specific type. In the above example, you may have a PrinterObjectFactory for creating Printer objects. An object factory must implement the ObjectFactory interface.