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 video, we dive deep into Java Wildcards in Generics — one of the most confusing yet powerful concepts in Java. If you've ever struggled with ? (unknown type) ? extends T (upper bounded wildcard) ? super T (lower bounded wildcard) What you'll learn in this video: What is ? (Wildcard) in Java Generics Why wildcards are needed (real-world problem solving) Upper Bounded Wildcards → ? extends T Lower Bounded Wildcards → ? super T PECS Rule (Producer Extends, Consumer Super) explained intuitively Read vs Write restrictions in wildcards Internal logic: why compiler restricts certain operations Practical coding examples for interview + real-world usage 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: java wildcards, java generics wildcards, wildcard in java, java extends vs super, java generics tutorial, java generics full course, java wildcard tutorial, java ? extends example, java ? super example, upper bounded wildcard java, lower bounded wildcard java, java PECS rule, producer extends consumer super java, java generics interview questions, java collections generics, java generics deep dive, learn java generics, java tutorial for beginners, java full course 2026, java programming, generics in java explained, java coding interview preparation