Explain the difference between a class and an interface in Java. When would you use each?

In Java, classes and interfaces are key elements of object-oriented programming, but they have different purposes and characteristics. Here's an in-depth explanation of the difference between a class and an interface in Java, along with the scenarios when you would use each: 1. Class: * Definition: A class in Java is a blueprint that defines the properties (attributes) and behaviors (methods) that objects of that class will possess. It represents a specific entity or concept. * Characteristics: + A class can have instance variables, constructors, methods, static members, and can define its own behavior. + Objects are created by instantiating a class using the `new` keyword. + A class can be extended by other classes to inherit its properties and behaviors using inheritance. * Usage: + Use a class when you want to model real-world entities, encapsulate related data and behavior into a single....