Introduction to Object Oriented Programming
Programming Paradigm
Programming paradigms are different ways or styles in which a given program or programming language can be organized. Each paradigm consists of certain structures, features, and opinions about how common programming problems should be tackled.
You can gain more idea through the given resource >> https://www.freecodecamp.org/news/an-introduction-to-programming-paradigms/
There are some popular paradigms
- Object Oriented
- Procedural
- Event-Driven
- Functional
- Logic
- Aspect Oriented
There are some languages which support only for one paradigm. ex: SmallTalk
As well as there are languages which support multi paradigms. ex: Java, Python, JavaScript, Ruby.
Multi paradigm support language codes can be implemented using two or more paradigm for a single program.
In here, we focus on Object Oriented Programming Paradigm.
We can't say what is the best paradigm. It depends on our problem, budget and many other things. So, based on our work we have to choose what is the best paradigm.
What is an Object ????
Object is a combination of Data (State) and Methods (Behavior).
Benefits Of OOP
- Reduced Complexity
- Easier Maintenance
- Code Reuse
- Faster Development
Class and Object ???
Class is a blueprint for creating objects.
Object is an instance of a class
Let's say car is a class. We can create some car object using that car class.
Class = Car
Objects = Car1, Car2, Car3, ....
Every class has fields and methods. Fields means data of the class. Methods means behavior of the class.
If we think car class, it can be included a color, year, brand, currentGear, currentSpeed etc. Those data can be called as data or states.
ex: Let's think Car1 object has color:red, year:2023, brand:BMW, currentGear:2, currentSpeed:90.
changeGear(), changeSpeed() are methods which means behavior.
ex: When we call a method, the data will be changed. If we call changeGear() method, then the gear can be changed from 2 to other.
for more >> https://youtu.be/PujHm5MNXjE?si=o9JRTH8bhQAxvL45
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