Write a program in java to find the area and circumference of a circle ring, whose outer and inner radii are 5cm and 2cm.

class circle_ring
{
    public static void main(String args[])
    {
       
        int r1=5,r2=2;
        double a,c;
        a=3.14*(r1*r1+r2*r2);
        c=2*3.14*7;
       
        System.out.println("Area of the circle="+a);
        System.out.println("Circumference of the circle="+c);
       
    }
}