PasswordGenerator class that create random password consisting of letters, numbers and symbols.
PasswordGenerator generator = new PasswordGenerator();
noOfDigits = 2,
noOfCapitalLetters = 1,
noOfSpecialChar = 2,
lengthOfDesiredPassword = 12
generator.generateRandomString(
noOfDigits, noOfCapitalLetters, noOfSpecialChar, lengthOfDesiredPassword);
random output : y@fdrKjpf1%0