NTU-OOP-Tuts-2024/T2Q1-4/src/Circle.java

public class Circle
{
    private double radius;
    private static final double PI = 3.14159;

    public Circle(double rad)
    {
        radius = rad;
    }
    public void setRadius(double rad)
    {
        radius = rad;
    }
    public double getRadius()
    {
        return radius;
    }
    public double area()
    {
        return PI * radius * radius;
    }
    public double circumference()
    {
        return 2 * PI * radius;
    }
    public void printArea()
    {
        System.out.println("Area of circle");
        System.out.println("Radius: " + radius);
        System.out.println("Area: " + area());
    }
    public void printCircumference()
    {
        System.out.println("Circumference of circle");
        System.out.println("Radius: " + radius);
        System.out.println("Circumference: " + circumference());
    }
}