private void hire_doctors() {
        /*
        public Doctor(String userName, String password, String firstName, String lastName, String middleName,
                String dateOfBirth, String sex, String socialSecurity,  String emailAddress, String mobilePhone,
        int skillId, int yearsOfExperience, Date hiredDate, int departmentID) {
        */

        Person aDoc = new Doctor("aDoc", "aDocPass", "Walter", "White", "A",
                "dateof", "m", "social", "doc@email", "mobile1232", 2, 1, "3", 3, 2);
        Person bDoc = new Doctor("bDoc", "bDocPbss", "Jesse", "Pinkman", "B",
                "dbteof", "m", "socibl", "doc@embil", "mobile1232", 2, 1, "3", 3, 2);
        Person cDoc = new Doctor("cDoc", "cDocPcss", "Saul", "Goodman", "C",
                "dcteof", "m", "socicl", "doc@emcil", "mobile1232", 2, 1, "3", 3, 2);
        Person dDoc = new Doctor("dDoc", "dDocPdss", "Gustavo", "Fring", "D",
                "ddteof", "m", "socidl", "doc@emdil", "mobile1232", 2, 1, "3", 3, 2);
        Person eDoc = new Doctor("eDoc", "eDocPess", "Skylar", "White", "E",
                "deteof", "m", "sociel", "doc@emeil", "mobile1232", 2, 1, "3", 3, 2);
        Person fDoc = new Doctor("fDoc", "fDocPfss", "Mike", "Ehrmantraut", "F",
                "dfteof", "m", "socifl", "doc@emfil", "mobile1232", 2, 1, "3", 3, 2);
        Person zDoc = new Doctor("zDoc", "zDocPzss", "Hank", "Schrader", "G",
                "dzteof", "m", "socizl", "doc@emzil", "mobile1232", 2, 1, "3", 3, 2);
        allStaff.put(aDoc.getUserName(), aDoc);
        allStaff.put(bDoc.getUserName(), bDoc);
        allStaff.put(cDoc.getUserName(), cDoc);
        allStaff.put(dDoc.getUserName(), dDoc);
        allStaff.put(eDoc.getUserName(), eDoc);
        allStaff.put(fDoc.getUserName(), fDoc);
        allStaff.put(zDoc.getUserName(), zDoc);
    }