can we do like this if it has any wrong please correct me

public class Solution {

    public static void main(String[] args) 
    {


      Scanner scan = new Scanner(System.in);
      String s=scan.nextLine();
      s.trim();
      StringTokenizer st = new StringTokenizer(s,("[_\\@!?.', ]"));
        int x = st.countTokens();
        System.out.println(x);
        while(st.hasMoreTokens()){
            System.out.println(st.nextToken());
        }
     scan.close(); 
    }
}