Java Program to calculate the Volume of a Cylinder

import java.io.*;
import java.util.*;
public class Cylinder{
    Scanner scan=new Scanner(System.in);
    double volume, radius, height;
    public void input(){
        try{
            System.out.println("Enter the Radius: ");
            radius=scan.nextInt();
            System.out.println("Enter the Height: ");
            height=scan.nextInt();
        }
        catch(NumberFormatException e){
            System.out.println("Error Code: "+e);
            System.exit(0);
        }
    }

    public void compute(){
        volume=3.14*radius*radius*height;
        System.out.println("Volume of Cylinder is: "+volume);
    }

    public static void main(String[] args){
        Cylinder obj=new Cylinder();
        obj.input();
        obj.compute();
    }
}