Remove Vowels

import java.util.Set;
class Main {
    public static void main(String[] args) {
        System.out.print(removeVowels("asdfertyioplku"));
    }
    public static String removeVowels(String s){
        StringBuilder sb = new StringBuilder();
        Set<Character> charSet = Set.of('a','A','e','E','i','I','o','O','u','U');
        for(char a : s.toCharArray()){
            // if(a=='a'||a=='A'||a=='e'||a=='E'||a=='i'||a=='I'||a=='o'||a=='O'||a=='u'||a=='U'){
            //     continue;
            // }
            // else{
            //     sb.append(a);
            // }
            if(!charSet.contains(a)){
                sb.append(a);
            }
            
        }
        return sb.toString();
    }
}