In Java, what is a constructor, an object, a class, and a method? How do they all work together?

To give an analogy: let's say there's a factory that manufactures cars. Before the car can be built, it needs schematics, a blueprint. A class is the blueprint for an object; it defines an object's structure, and all instances of that class (the objects) will be created according to that structure.

Constructors are like the assembly line - they take the blueprints from the class definition and put together an actual object. A constructor is a function, and it can be used to define certain parameters for a specific instance of an object (in the factory example, this might be choosing different colors for different cars).

An object is an actual instance of a car. It has certain properties (its weight, color, model), and crucially, it's able to do things. The things an object is able to do are called its methods. Methods are functions specific to a class. For instance, all objects in a hypothetical Car class might be able to drive, steer, and brake, and these methods would be defined by drive (), steer (), and brake () functions in the Car's class definition.

To sum it up:

Classes are the blueprints for objects, which are brought into the world by constructors, and which can call their own internal functions called methods.