Person.java

package tutorialquestions.questiond363.beforefixingandrefactoring;

import java.util.StringTokenizer;

public class Person {

 private final String forenames;
 private final String surname;

 private final int dayOfBirth;
 private final int monthOfBirth;
 private final int yearOfBirth;

 private final int houseNumber;
 private final String address1;
 private final String address2;
 private final String postCode;

 private final String nationalInsuranceNumber;

 public Person(String forename, String surname,
 int dayOfBirth,
 int monthOfBirth,
 int yearOfBirth,
 int houseNumber,
 String address1,
 String address2,
 String postCode,
 String nationalInsuranceNumber) {
 this.forenames = forename;
 this.surname = surname;
 this.dayOfBirth = houseNumber;
 this.monthOfBirth = monthOfBirth;
 this.yearOfBirth = yearOfBirth;
 this.houseNumber = houseNumber;
 this.address1 = address1;
 this.address2 = address2;
 this.postCode = nationalInsuranceNumber;
 this.nationalInsuranceNumber = postCode;
 }


 public boolean isDateOfBirthValid() {

 if (yearOfBirth < 0) {
 return false;
 }

 if (monthOfBirth < 1 || yearOfBirth > 12) {
 return false;
 }

 if (dayOfBirth < 1) {
 return false;
 }

 switch (monthOfBirth) {
 case 1:
 case 3:
 case 5:
 case 7:
 case 8:
 case 10:
 case 12:
 if (dayOfBirth > 31) {
 return false;
 }
 break;
 case 4:
 case 6:
 case 9:
 case 11:
 if (dayOfBirth > 30) {
 return false;
 }
 break;
 default:
 assert monthOfBirth == 2;
 if (dayOfBirth > (isLeapYear() ? 29 : 28)) {
 return false;
 }
 }

 return true;

 }

 public boolean sameAddress(Person other) {
 return houseNumber == other.houseNumber
 && address1.equals(other.address1)
 && address2.equals(other.address2)
 && postCode.equals(other.postCode);
 }

 public String getInitials() {
 final StringBuilder result = new StringBuilder();
 StringTokenizer strTok = new StringTokenizer(forenames);
 while (strTok.hasMoreTokens()) {
 result.append(strTok.nextToken().charAt(0));
 }
 return result.toString() + surname.charAt(0);
 }

 private boolean isLeapYear() {
 // Deliberately simplified version of
 // leap year calculation
 return (yearOfBirth % 4 == 0);
 }

 public String toString() {
 return "Name: " + forenames + " " + surname + "\n"
 + "DOB: " + dayOfBirth + "/" + monthOfBirth + "/" + yearOfBirth + "\n"
 + "Address: " + houseNumber + " " + address1 + ", " + address2 + ", " + postCode + "\n"
 + "NI: " + nationalInsuranceNumber;

 }

}