Classes are the building blocks of Java programs. They're like blueprints that define the properties and behaviors of objects. Without them, Java wouldn't be the language it is today. What is a Class in Java? In Java, a class is a user-defined blueprint or prototype from which objects are created. It encapsulates data for the object and methods to manipulate that data. Think of a class as the architectural plan for a house. Just as the plan dictates the house's design, a class outlines how objects should look and behave. Key Components: Fields : These are variables that store the object's data. Methods : Functions that define the behavior of the objects created from the class. Constructors : Special methods used to initialize objects. Simple Java Class Example Let's begin with a simple example: a Car class. public class Car { // Fields String color; String model; // Constructor public Car(String co...