import java.io.*;

class BufferedReaderDemo {
  public static void main(String args[]) throws IOException {
    String s = "This is a © copyright symbol " +
      "but this is &copy not.\n";
    char buf[] = new char[s.length()];
    s.getChars(0, s.length(), buf, 0); 
    CharArrayReader in = new CharArrayReader(buf);
    BufferedReader f = new BufferedReader(in);
    int c;
    boolean marked = false;

    while ((c = f.read()) != -1) {
      switch(c) {
      case '&':
        if (!marked) {
          f.mark(32);
          marked = true;
        } else {
          marked = false;
        }
        break;
      case ';':
        if (marked) {
          marked = false;
          System.out.print("(c)");
        } else
          System.out.print((char) c);
        break;
      case ' ':
        if (marked) {
          marked = false;
          f.reset();
          System.out.print("&");
        } else
          System.out.print((char) c);
        break;
     default:
       if (!marked)
           System.out.print((char) c);
       break;
      }
    }
  }
}