Simplifying OOP in Java: Constructors
A simple introduction to constructors in Java, showing how objects receive their initial values when they are created.
Day 4: Constructors
After understanding classes, objects, encapsulation, and access modifiers, the next step is learning how objects get their initial values.
That is where constructors come in.
A constructor is a special part of a class that runs automatically when an object is created. Its job is to initialize the object with the values it needs from the beginning.
In Java, a constructor has the same name as the class and does not have a return type.
class Car {
String brand;
Car(String brand) {
this.brand = brand;
}
}
Car myCar = new Car("Toyota");In this example, the constructor gives the Car object its brand value at the moment it is created.
This makes object creation cleaner and more intentional, because the object starts with the data it needs right away.