Cyberoid

import java.util.Scanner;
public class VolumeBola

{
 public static void main (String[] args)
 {
  Scanner nominal = new Scanner(System.in);
  
  int r;
  System.out.println(" ");
  System.out.println("Menghitung Volume Bola");
  System.out.println("+------------------------------------+");
  System.out.println("| (Rumus Volume Bola ? 4/3 x phi x r3|");
  System.out.println("+------------------------------------+");
  System.out.print("masukkan jari-jari (r)\t= ");
  r = nominal.nextInt();
  if (r < 0 )
    {
    System.out.println("nilai tidak boleh kecil dari 0");
    System.out.println("jika nilai yang anda masukkan tidak sesuai");
    System.out.println("Program tidak akan bekerja sebagaimana mestinya !");
    System.out.print("masukkan kembali nilai sisi pendek\t= ");
    r = nominal.nextInt();    
    }
    else
    if (r > 0) 
    {
    System.out.print(" ");
    }
  
  double phi,r3,VolumeBola;  
  phi = 3.14;
  r3 = r * r * r;
  VolumeBola = 4 / 3 * phi * r3;
   System.out.println("Diketahui");
   System.out.println("---------");
      System.out.println("phi\t\t= 22/7");
   System.out.println("jari-jari\t="+r);
   System.out.println("Penyelesaian");
   System.out.println("------------");
   System.out.println("\t\tr3 = r x r x r");
   System.out.println("\t\t   = " + r3);
   System.out.println("Volume Bola\t   = 4/3 x phi  x r3 ");
   System.out.println("\t\t   = 4/3 x 3.14 x "+ r3);
   System.out.println("\t\t   = "+(4 * phi / 3 * r3));
  
 }
}