OOP Encapsulation

package kerul.circle;

//another class
class Circle{
    private double radius, area;//attribute

    Circle(double x){
        radius=x;
    }

    //method
    public void getArea(){
        area = radius * radius * 3.142;
        System.out.println("Radius: "+radius);
        System.out.println("Area: "+area);
    }
}//end Circle

public class TestCircle {
    public static void main(String[] args) {

        System.out.println("Welcome");
        Circle c1= new Circle(7);//create object
        //c1.radius=7;
        //c1.area=8;
        c1.getArea();
        //System.out.println("Area="+c1.getArea());

    }//end main

}//end TestCircle