StellarA constructor is a special method used to initialize objects when they are created. It sets up the initial state of an object, usually by assigning values to its fields or performing any setup work needed for the object. Unlike other methods, a constructor must have the same name as the class and does not have a return type (not even void).
Constructors simplify object creation and ensure objects start with a valid state. Imagine creating a Book object: instead of setting its title, author, and pages fields separately, a constructor allows you to set them all in one step when the object is created. This makes your code cleaner, more readable, and less error-prone.
Constructor overloading is providing multiple constructors in the same class, each with a different number or type of parameters. This allows you to create objects in different ways based on what information you have.