private void write_To_file() {
        try {
            WriteHand = new BufferedWriter(new FileWriter("table.txt"));
            myDataList mytable = (myDataList) arrList.get(0);

            for (int i = 0; i < mytable.size(); i++) {
                WriteHand.write(((data) mytable.get(i)).getChar());
                WriteHand.write(" ");
                WriteHand.write(((data) mytable.get(i)).getBinary_Code());
                WriteHand.newLine();
            }
            WriteHand.flush();
            WriteHand.close();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }