What is difference between abstract factory and 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.
Why do we need builder patterns?
Builder pattern aims to “Separate the construction of a complex object from its representation so that the same construction process can create different representations.” It is used to construct a complex object step by step and the final step will return the object.
What’s the difference between inheritance and composition in OOP?
Although Inheritance and Composition are two OOP concepts, they are quite different in what they allow the programmer to achieve. Inheritance is the ability for a class to inherit properties and behavior from a parent class by extending it, while Composition is the ability of a class to contain objects of different classes as member data.
What is the difference between inheritance and composition in Java?
Inheritance between two classes, where one class extends another class establishes “IS A” relationship. Composition on the other end contains an instance of another class in your class establishes “Has A” relationship. Composition in java is is useful since it technically facilitates multiple inheritance.
When to use composition over inheritance in Python?
Use composition over inheritance in Python to create components that can be reused by multiple classes in your Python applications. Use composition over inheritance in Python to implement groups of behaviors and policies that can be applied interchangeably to other classes to customize their behavior.
Why is inheritance a required feature in Python?
Inheritance is a required feature of every object oriented programming language. This means that Python supports inheritance, and as you’ll see later, it’s one of the few languages that supports multiple inheritance. When you write Python code using classes, you are using inheritance even if you don’t know you’re using it.