[JAVA] RANDOM TEXT

 String characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";

        char[] randomChars = new char[length];

int randomIndex = random.nextInt(characters.length());

            randomChars[i] = characters.charAt(randomIndex);