Problem with an exercise in java

Hello, i have an exercise in java that, we want to find word frequency in documents.

e.g.We have 3 documents a1.txt, a2.txt, a3.txt.

a1 = {aaa, aaa, bbb, kkk, ccc, hhh}
a2 = {kkk, aaa, hhh, ddd}
a3 = {mmm, ccc, ccc, hhh}

So, the df(document frequency) for the distinct words are:

aaa = 2
bbb = 1
ccc = 2
ddd = 1
hhh = 3
mmm = 1
kkk = 2 etc

I have an ArrayList of the above class Word that i store various information about distinct words

Code:

---


....

private ArrayList<Word> words = new ArrayList<Word>();

public static class Word{
        public int lineNum;
        public int index;
        private int df; //document frequency
        public String name;
        public int wordcount;
        private String filename;
       
        public Word(int lineNum, int index, String name, int wordcount, String filename, int documentfrequency) {
            this.lineNum = lineNum;
            this.index = index;
            this.name = name;
            this.wordcount = wordcount;
            this.filename = filename;
            this.df = df;
        }

        public int getLineNum() {
            return lineNum;
        }
        public int getIndex() {
            return index;
        }
        public String getName() {
            return name;
        }

        //class to sort words by lineNumber
        public static  class CompLineNum implements Comparator<Word> {
            @Override
            public int compare(Word arg0, Word arg1) {
                return arg0.lineNum - arg1.lineNum;
            }
        }
       
        public static class CompName implements Comparator<Word> {
        private int mod = 1;
        public CompName(boolean desc) {
            if (desc) mod =-1;
        }
       
        public int compare(Word arg0, Word arg1) {
            return mod*arg0.name.compareTo(arg1.name);
        }
           
    }
}

....

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so, to find df i read again the documents and i have the above method to find duplicates of words in documents

Code:

---

@SuppressWarnings("empty-statement")
    public void findDfOfWord() throws FileNotFoundException, UnsupportedEncodingException, IOException{
        String wordtemp = null;
        String filetemp = null;
        String[] word = null;
        int duplicatewordcount = 0;
        Map<String, Integer> unique = new LinkedHashMap<String, Integer>();
       
        //scan all files that we choose for the word
        for(int k=0; k<filelist.length; k++){
                filename = listOfFiles[filelist[k]].getName();
                FileInputStream fstream = new FileInputStream(folderpath+"/"+filename);         
                DataInputStream in = new DataInputStream(fstream);       
                BufferedReader input = new BufferedReader(new InputStreamReader(in,"UTF-8"));
               
                String wordd = input.readLine();
               
               
                for(int j=0; j<wordswithoutduplicates.size(); j++){
                    wordtemp = wordswithoutduplicates.get(j).name;
                    filetemp = wordswithoutduplicates.get(j).filename;
                    while(wordd!=null){
                        word = wordd.split("\\s+");
                        System.out.println("dddd:::"+wordtemp.compareTo(word.toString()));
                       
                        [I]if(wordtemp.compareTo(word.toString()) ==0 && filename.compareTo(wordtemp)==0
                              && duplicatewordcount<1){[/I]
                            if(unique.get(wordtemp) == null)
                                unique.put(wordtemp, 1);
                            else
                                unique.put(wordtemp, unique.get(wordtemp) + 1);
       
                            String uniqueString = join(unique.keySet(), ", ");
                            List<Integer> value = new ArrayList<Integer>(unique.values());

                            System.out.println("Output = " + uniqueString);
                            System.out.println("Values = " + value);
                            duplicatewordcount++;
                        }
                        wordd = input.readLine();
                    }
                   
                }
        }
}

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but at the code in line 26-27, it doesn't find duplicates at the if condition.

What is the error?

upppp

Use some debugging.
Put println() statements in there so you can see what it's comparing, because I don't think this:

Code:

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wordtemp.compareTo(word.toString())

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is doing what you think it is.
WHat do you think the output of 'word.toString()' is going to be?