Why does the FileReader stream read 237, 187, 191 from a textfile?

I have a text file with a just a character 'T' inside, and I have created a read stream to output to the console what is being read and I got 239, 187, 191 and 84, I understand that 84 represents 'T', I know 239, 187, 191 represent other characters as well but I don't have those characters in my text file, what is going on??

public class Test {

   public static void main(String args[]) throws IOException {  
      FileInputStream in = null;

      try {
         in = new FileInputStream("input.txt");         
         int c;
         while ((c = in.read()) != -1) {
             System.out.println(c);

         }
      }finally {
         if (in != null) {
            in.close();
         }
      }
   }
}