Introduction to Interfaces in Java

This lecture introduces the concept of interfaces in Java, focusing on object-oriented programming. Starting with a hypothetical video game scenario involving entities like Ball, Racket, Net, and Player, the instructor explains the need for interfaces to handle different entity behaviors. The lecture covers the limitations of single inheritance in Java, the syntax of interfaces, implementing multiple interfaces in a class, and using interfaces to enforce common methods across classes. It also discusses the role of interfaces in separating concerns and ensuring class compliance with specific protocols, emphasizing the 'behaves-like' relationship. Through examples and summaries, students learn how interfaces provide a flexible mechanism for defining common behaviors in unrelated classes.