OOP 5 | Abstract Classes, Interfaces, Annotations

This fifth video of the complete object oriented programming (#OOP) course in Java will clear some of the most important concepts for you about multiple inheritance. Covering abstract classes, interfaces, annotations, and more! Complete OOP playlist: https://www.youtube.com/playlist?list=PL9gnSGHSqcno1G3XjUbwzXHL8_EttOuKk Take part in the learning in public initiative! Share your learnings on LinkedIn and Twitter with #DSAwithKunal & don't forget to tag us! 👉 Resources - Join Replit: http://join.replit.com/kunal-kushwaha - Complete Java DSA playlist: https://www.youtube.com/playlist?list=PL9gnSGHSqcnr_DxHsP7AW9ftq0AtAyYqJ - Code, Assignments, & Notes: https://github.com/kunal-kushwaha/DSA-Bootcamp-Java ➡️ Connect with me: http://kunalkushwaha.com ========================================= Timestamps: 0:00:00 Introduction 0:00:30 Multiple Inheritance Problem 0:01:08 Abstract Classes 0:06:38 Example of Abstract Classes 0:16:45 Abstract Constructors 0:17:15 Object of an Abstract Class 0:17:40 Abstract Static Methods 0:18:04 Static Methods in Abstract Classes 0:21:52 "final" Keyword in Abstract Class 0:24:18 Multiple Inheritance using Abstract Classes 0:25:10 Interfaces 0:31:29 Example of Interfaces 0:43:41 Variable of Interface Type 0:47:42 Separate Classes in Same Interface 0:55:01 Extending Interfaces 0:57:18 Annotations 1:02:05 Important point regarding Static Interface methods 1:06:17 Nested Interfaces 1:09:31 Outro #placement #dsa #interviews