Constructors

A constructor is a special method that is used to initialize objects. The constructor is called when an object of a class is created. (We will see this in action in couple of lessons)

To create a constructor, use:

class MyClass {
	public MyClass() {
	
	}
}

As you see, the constructor does not have a return type like any other method, and it has the same name as the class name.

A common use of the constructor method is to initiate values into the class fields, for example:

class Point {
	int x = 0;
	int y = 0;
	public Point(int newX, int newY) {
		x = newX;
		y = newY;
	}
}

In the above example, we initiate the values of x and y on the creation of an object of type Point.

Note, you can refer to class methods and attribute using this keyword, like this:

class Point {
	int x = 0;
	int y = 0;
	public Point(int x, int y) {
		this.x = x;
		this.y = y;
	}
}

In the above example, it's important to use this keyword because the name of the arguments are same as the attributes!