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!
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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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