Replacing duplicates

Question

hi there
using a TreeSet - i would like to know on how to replace any duplicate words read from input by keyboard or file, to replace it with a character?
i have most of the code but just unsure on how to display the duplicate word with a * for example:
import textio.*;
import java.util.*;
import java.io.*;
public class example2iter
     public static void main(String []args)
          Set uniques = new HashSet();
          Set duplicates = new HashSet();
          ConsoleIO.out.print("Enter File Name to read from: ");
          String fileName = ConsoleIO.in.readString();
          try{
               FileTextReader inputFile = new FileTextReader(fileName);
               while(inputFile.isEOF()==false)
                    String word = inputFile.readLine();
                    boolean successful = uniques.add(word);
                    if(!successful)
                         uniques.add("*");
          catch (IOException exception)
               ConsoleIO.out.println("Cannot open " + fileName);
          uniques.removeAll(duplicates);
          Iterator theuniq = uniques.iterator();
          Iterator thedups = duplicates.iterator();
          while(theuniq.hasNext() == true)
               String words = (String)iter.next();
               ConsoleIO.out.println("" + words);     
}

Answer 1

what if you tried this when checking if the word was added successfully....
successful = unique.add(word);
if(successful == false)
     unique.add(word + "*");
     duplicates.add(word);
}then, after reading all words, the duplicates Set will contain those words that are duplicate and you can remove all of them from the unique Set with...
unique.removeAll(duplicates);as you seem to already have in ur code...try using the code above...it should work...