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. Join Coder Army Whatsapp Group: https://whatsapp.com/channel/0029Va6H0tbHVvTbcuT99Y1f Join System Design Whatsapp Group: https://whatsapp.com/channel/0029VbBF1XKF1YlMyYuPM23s Code and Notes: Github : https://github.com/adityatandon15/Java-Full-Course We offer paid course on Dsa, web development, blockchain, system design and GenAI. Join our Paid Course: https://strikes.in/ Coder Army: https://coderarmy.in/#home Coder Army app: https://play.google.com/store/apps/details?id=com.rohit.negi Connect with Aditya Tandon Instagram : https://www.instagram.com/adityatandon2 LinkedIn : https://www.linkedin.com/in/adityatandon2 Twitter : https://x.com/adityatandon02 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 java oops tutorial, introduction to oops in java, java classes and objects, object oriented programming in java, java for beginners, java main method explained, compile time vs runtime in java, user defined data type in java, java programming full course, java oops concepts, java real world modeling, learn java from scratch, java foundation tutorial, java object creation explained, traditional vs oops programming