Java Programming for Complete Beginners - Java 16 - Step 19 - Java Interface Versus Abstract Class - a Comparison

The video tutorial explains the differences between abstract classes and interfaces. It highlights that while their syntax may appear similar, they serve different purposes. Interfaces are used to define communication patterns between systems, while abstract classes provide a high-level structure for subclasses. The tutorial also covers syntactical differences, such as visibility of methods and variable usage. It concludes by discussing how a class can implement multiple interfaces but cannot extend multiple abstract classes.

What is the main difference between an abstract class and an interface?

In what scenarios would you prefer to use an interface over an abstract class?

What are the syntactical differences between an abstract class and an interface?

Can a class implement multiple interfaces? Explain your answer.

Why can't a class extend multiple abstract classes?