Encapsulation

Bundling related variables and functions together to create a class

Object

An object is an instance of a class

Class

In Java, classes are types

class Circle {
	double x;
	double y;
	double radius;
 
	double getArea() {
		return 3.14 * r * r;
	}
}
 
Circle c = new Circle();
c.radius = 2;
c.getArea();