Welcome to the Complete Java Full Course 2026. This structured Java tutorial series is designed to take you from absolute beginner to advanced level in Java programming. In this playlist, you will learn: • Java Basics • Variables & Data Types • OOP Concepts (Encapsulation, Inheritance, Polymorphism, Abstraction) • Constructors & Methods • Static & Non-static concepts • Memory Management in Java • Collections Framework • Exception Handling • Multithreading • Java for Placements & Interviews This course is perfect for: College students Beginners starting programming Placement preparation Software engineering interviews DSA preparation Anyone who wants strong Java fundamentals Each lecture is structured step-by-step with deep conceptual clarity and practical examples. Start from Lecture 1 and follow the playlist in sequence for best results. Subscribe and stay consistent. Java mastery requires structured learning. Github Link for Notes & Code : https://github.com/adityatandon15/Java-Full-Course java full course 2026, java tutorial for beginners, learn java step by step, complete java course, java programming course, java for placements, java interview preparation, java beginner to advanced, java dsa preparation, java oops concepts, java fundamentals, java basics to advanced
Curated by: Coder Army (57 videos)
In this lecture of the Java Full Course, we dive deep into two of the most important Object-Oriented Programming concepts : Abstraction and Polymorphism. You will learn how abstraction hides complexity, how abstract classes and interfaces work internally, and how Java achieves polymorphism using method overloading and method overriding. We will also understand the difference between abstraction and encapsulation, and explore how static and final methods behave in polymorphism. This lecture builds the core foundation of OOP used in real-world Java development, system design, and backend engineering. Topics Covered ✔What is Abstraction in Java ✔ Types of Abstraction ✔ Low Level vs High Level Abstraction ✔ Abstract Classes Explained ✔ Interfaces in Java ✔ Abstract Class vs Interface (Interview Favourite) ✔ Abstraction vs Encapsulation ✔ What is Polymorphism ✔ Static Polymorphism (Method Overloading) ✔ Dynamic Polymorphism (Method Overriding) ✔ Static & Final Methods in Polymorphism 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 00:53 Abstraction 11:44 Types of Abstraction 13:22 Low level Abstraction 17:28 High level Abstraction 28:29 Abstract classes 43:40 Interfaces 49:55 Abstract class vs Interfaces 01:02:14 Abstraction vs Encapsulation 01:04:24 Polymorphism 01:05:23 Static Polymorphism 01:09:55 Dynamic Polymorphism 01:16:21 Static & final methods in Polymorphism java abstraction, java polymorphism, abstract class vs interface java, method overloading java, method overriding java, static polymorphism java, dynamic polymorphism java, java oop concepts, java abstraction tutorial, java polymorphism tutorial, abstraction vs encapsulation java, java interface tutorial, java abstract class tutorial, java oop explained, java programming tutorial, learn java programming, java for beginners, java backend development