Beautiful binary string of hackerrank

Beautiful binary string Solution:-

import java.util.*;

public class Main

{

public static void main(String[] args)

{ Scanner in=new Scanner(System.in);

String sb=in.next();

int c=0;

StringBuffer s=new StringBuffer(sb);

      int i=s.indexOf("010");

 while(i>=0&&i<=s.length())

 {s.delete(i,i+3);

 s.insert(i,"011");

 i=s.indexOf("010");

c++;

}

System.out.println(c);

}

}