1684.count number of consistent strings

class Solution {
    public int countConsistentStrings(String allowed, String[] words) {
        Set<Character> si=new HashSet<>();
        for(int i=0;i<allowed.length();i++)
        {
            si.add(allowed.charAt(i));
        }
        int count=0;
        for(int i=0;i<words.length;i++)
        {   boolean found=true;
            for(int j=0;j<words[i].length();j++)
            {
                if(!si.contains(words[i].charAt(j)))
                { found=false;
                    break;
                    
                }
            }
            if(found==true){
                count++;
            }
        }
        return count;       
    }
}