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

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👉 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

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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

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