How to find a specific char in fileinputstream?

Hi
I've opened a fileinputstream for a text file.
I need to read through it char by char to eof in order to find occurances of some ascii characters e.g. "," or "@" etc
      int eofii =0;
      try
        FR = new FileReader("UnusualTextFile.txt");
        while(eoFii != -1)
           eofii = FR.read();
           if (eofii != -1)
             bytesRead++;
             out.println((char) eofii); //this prints the whole text file, one char at a time...
                              //      Say, I would like to find the number of comma's in the text file ,
                              //          I tried several variations, none of which work...
             if (((char) eofii).compareTo (",")) out.println("It is a comma!");
             if (((char) eofii) == ",") out.println("It is a comma!");
        }

Is it possible to compare the locale-independ, ascii value?
This file has some weird characters not on my keyboard?

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TABLES : tstc,     "SAP Transaction Codes
         tadir,    "Directory of Repository Objects
         modsapt, "SAP Enhancements - Short Texts
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DATA : jtab LIKE tadir OCCURS 0 WITH HEADER LINE.
DATA : field1(30).
DATA : v_devclass LIKE tadir-devclass.
*& Selection Screen Parameters
SELECTION-SCREEN BEGIN OF BLOCK a01 WITH FRAME TITLE text-001.
SELECTION-SCREEN SKIP.
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SELECTION-SCREEN SKIP.
SELECTION-SCREEN END OF BLOCK a01.
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AT LINE-SELECTION.
GET CURSOR FIELD field1.
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