j

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         

 String _alphabet = "ЙЦУКЕНГШЩЗХФЪЫВАПРОЛДЖЭЧСМИТЬБЮ";  
            String _line= "";
            char[] digit = _line.toLowerCase().toCharArray();// чар нижний 
            String _cryptedString = "";
           Random r = new Random();
            int [] l = new int[] {11, 18, 25, 2, 9, 10, 12, 19, 21, 3, 4, 6, 13, 20, 22, 23, 5, 7, 14, 16, 17, 24, 1, 8, 15};


                    for (int i = 0; i < 25; i++)
                    {
                    
                        if (( digit[i]- 1) < l.length  )
                        { 
                                 digit[i] = (char) (l[i] - 1);
                            _cryptedString += digit[(char)(l[i]- 1)];
                            
                           jTextArea1.append(_cryptedString.toString());
                      
                        } 
                        else
                        {
                            char _randomChar = _alphabet.charAt(r.nextInt(_alphabet.length()-1));
//                            Console.Write(_randomChar + "\t");
                            _cryptedString += _randomChar;
                        }
                    }
    }