What are the characteristics of object-oriented programming?

The characteristics of object-oriented programming are:

1. It follows a bottom-up approach.
2. The program resulting from object-oriented programming is a collection of objects. Each object has its own data and a set of operations.
3. OOP restricts the free movement of data and the functions that operate on it.
4. A properly defined class can be reused, giving way to code reusability.
5. The concept of object-oriented programming models real-world entities very well.
6. Due to its object-oriented approach, it is extremely useful in solving complex problems.