Otvor File

try {
                BufferedReader br = new BufferedReader(new FileReader(fi));
                String s = "";
                String riadok = "";
                while ((riadok = br.readLine()) != null) {
                    s += riadok;
                }
                taEditor.setText(s);

                if (br != null) {
                    br.close();
                }

            } catch (FileNotFoundException exSubor) {
                JOptionPane.showMessageDialog(null, exSubor.getLocalizedMessage(), "Chyba", JOptionPane.ERROR_MESSAGE);
            } catch (Exception exVsetky) {
                JOptionPane.showMessageDialog(null, exVsetky.getLocalizedMessage(), "Chyba", JOptionPane.ERROR_MESSAGE);

            }