Java Program to check whether a no. is Disarium or not

import java.util.*;

class Disarium

{

int num;

int size;

public Disarium(int nn)

{

num=nn;

size=0;

}

void countdigit()

{

int n=num;

while(n>0)

{

n=n/10;

size++;

}

}

int sumofDigits(int n,int p)

{

if(n==1)

return 1;

if(n==0)

return 0;

else

return (int)Math.pow(n%10,p)+sumofDigits(n/10,--p);

}

public void check()

{

if(num==sumofDigits(num,size))

System.out.println("Disarium no.");

else

System.out.println("Not a disarium no.");

}

public static void main()

{

System.out.println("Enter no");

Scanner sc=new Scanner(System.in);

int n=sc.nextInt();

Disarium ob=new Disarium(n);

ob.countdigit();

ob.check();

}

}