Program to find the Area and Circumference of Circle in Java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;


public class AreaCircumferenceCircle
{
final static float pi = 22/7f;

public static void main(String[] args) throws NumberFormatException, IOException
{
System.out.println("Enter the radius of the circle: ");
InputStreamReader io= new InputStreamReader(System.in);
BufferedReader br = new BufferedReader(io);
float radius = Float.parseFloat(br.readLine());
System.out.println("Area of the Circle is: "+radius*radius*pi);
System.out.println("Circumference of the Circle is: "+2*radius*pi);
}
}