genPass

    public static ByteArrayOutputStream getPassword() {

        ByteArrayOutputStream resilt = new ByteArrayOutputStream();
        char[] numbers = "0123456789".toCharArray();
        char[] alphabetBigCase = "ABCDEFGHIGKLMNOPQRSTUVWXYZ".toCharArray();
        char[] alphabetLowerCase = "abcdefghijklmnopqrstuvwxyz".toCharArray();

        Random random = new Random();
        List<Character> password = new ArrayList<>();
        password.add(numbers[random.nextInt(numbers.length)]);
        password.add(alphabetBigCase[random.nextInt(alphabetBigCase.length)]);
        password.add(alphabetLowerCase[random.nextInt(alphabetLowerCase.length)]);

        for (int i = 0; i < 5; i++) {
            int array = random.nextInt(3);

            switch(array){
                case 0 :
                    password.add(numbers[random.nextInt(numbers.length)]);
                    break;
                case 1 :
                    password.add(alphabetBigCase[random.nextInt(alphabetBigCase.length)]);
                    break;
                case 2 :
                    password.add(alphabetLowerCase[random.nextInt(alphabetLowerCase.length)]);
                    break;
            }
        }

        for (int i = 0; i < 10; i++) {

            Collections.shuffle(password);
        }

        for (Character character : password) {
            resilt.write(character);
        }



        return resilt;
    }