Object Oriented Programming in Java | Classes, Objects, new Keyword | Java Full Course #12
In this video, we begin the most important concept in Java — Object Oriented Programming (OOP).
Before writing advanced Java code, you must clearly understand how OOP works, why traditional programming had limitations, and how Java models the real world using classes and objects.
In this complete foundational lecture, we cover:
Traditional Programming vs Object-Oriented Programming
Problems with the procedural approach
Representing the real world in code
What are Classes?
User-defined data types
Creating Objects
Compile-time vs Runtime concepts
Characteristics of Objects
Naming conventions in Java
Representing behaviors
Non-physical objects in programming
Writing your first Class & Object
Understanding the role of the Main class
This lecture builds the base for everything ahead : Abstraction, Inheritance, Polymorphism, Encapsulation, Design Patterns, and System Design.
Why Learn Java?
Java is one of the most powerful and widely used programming languages in the world.
It is used in:
Backend development
Enterprise applications
Android development
Banking systems
Large-scale distributed systems
If you want to master Data Structures, Spring Boot, Microservices, or System Design, Java fundamentals are essential.
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Timestamps:
00:00 Intro
00:38 Traditional Programming
06:00 Problem with Traditional approach
08:26 Object Oriented Programming
20:50 Representing real world in code
22:33 Classes
25:33 User Defined DataType
26:50 Creating Objects
34:07 Compile Time & Run Time
36:15 Characteristics in Object
41:30 Naming Convention
44:21 Representing Behaviours
55:32 Non-Physical Objects
57:37 Coding Class & Objects
01:02:02 Understanding the Main class
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