Class - 10 things to know with detail
- 1. What is a class? A class is a blueprint for creating objects in object-oriented programming. It defines the properties and behaviors that an object will have.
- 2. How to define a class? In most programming languages, a class is defined using the class keyword followed by the class name and a code block containing the properties and methods of the class.
- 3. What are properties in a class? Properties are the characteristics or data that an object of a class can have. They are defined within a class and hold values that describe the state of the object.
- 4. What are methods in a class? Methods are functions defined within a class that can perform actions or operations on the object's properties. They define the behavior of the object.
- 5. What is object instantiation? Object instantiation is the process of creating an instance of a class. When an object is instantiated, memory is allocated for the object, and the object's properties are initialized.
- 6. How to create an object from a class? To create an object from a class, you use the new keyword followed by the class name and any arguments required by the class's constructor.
- 7. What is inheritance in classes? Inheritance is a feature of object-oriented programming that allows a class to inherit properties and methods from another class. This promotes code reusability and helps create a hierarchy of classes.
- 8. What is encapsulation in classes? Encapsulation is the concept of bundling data (properties) and methods that operate on the data (methods) within a class. It helps to hide the internal implementation details of a class and only expose the necessary interfaces.
- 9. What is polymorphism in classes? Polymorphism is the ability of an object to take on different forms. In object-oriented programming, polymorphism allows objects of different classes to be treated as objects of a common superclass.
- 10. How are classes used in programming? Classes are used to model real-world entities, abstract concepts, or data structures in programming. They help organize code, improve code readability, promote code reusability, and facilitate object-oriented design principles.