Define class EmailId with members, username, domainId and password. Define default and parameterized constructors. Accept values from the command line and create a date object. Throw user defined exceptions – “InvalidUsernameException” or “InvalidPasswordException” if the uaername and password are invalid. If the date ...

Create a class Doctor with attributes id, name, age and department. Initialize values through parameterized constructor. If age of Doctor is not in between 25 and 65 then generate user-defined exception “AgeNotWithinRangeException”. If name contains numbers or special symbols raise exception “NameNotValidException”.