CoderByte Task 1 - maxString

import java.util.*; 
import java.io.*;

class Main {
  public static String ReplaceString(String str, String token){
    StringBuilder sb = new StringBuilder();
    for(int i=0; i<str.length(); i++){
      char c = str.charAt(i);
      if(token.contains(Character.toString(c)))
        continue;
      else sb.append(c);
    }
    return sb.toString();
  }

  public static String StringChallenge(String sen) {
    // code goes here  
      String token = "s1otw2b";
      String[] word = sen.split("\\W+");
      String longest = word[0];
      for(int i=0; i<word.length; i++){
        if(word[i].length() > longest.length()){
          longest = word[i];
        }
      }
      
      return ReplaceString(longest, token);
  }

  public static void main (String[] args) {  
    // keep this function call here     
    Scanner s = new Scanner(System.in);
    System.out.print(StringChallenge(s.nextLine())); 
  }

}