Java program to check for Happy no

//Find out if a program is a happy no. or not.

import java.util.*;

class Happy

{

public void conti(int n)

{

int digits;

int copy=n;

boolean flag=false;

do

{

int s=0;

digits=0;

while(n>0)

{

int dg=n%10;

s=s+dg*dg;

n=n/10;

}

System.out.println("Sum = " + s);

for(int i=s;i>0;i=i/10)

digits++;

System.out.print("Digits " + digits);

if(s==1)

flag=true;

n=s;

}while(digits>1);

if(n==1)

System.out.println("Happy no. is " +copy);

}

}