Something

import java.io.*;class CircleArea{public void calculate(int r){  double area = java.lang.Math.PI*r*r;        System.out.println("Area of Circle : "+area);        double  perimeter =2*java.lang.Math.PI*r ;        System.out.println("Perimeter of Circle : "+perimeter);}public void getInput() throws IOException{int r=0;        BufferedReader br1 = new BufferedReader(new InputStreamReader(System.in));        System.out.println("Enter Radius of Circle  : ");        r = Integer.parseInt(br1.readLine());	calculate(r);}public static void main(String[] args) throws Throwable{        CircleArea circ = new CircleArea();	circ.getInput();         }}