INHERITANCE AND POLYMORPHISM - Java Programming: From Problem Analysis to Program Design - page 688

The definitions of the methods of the class PersonalInfo follow:
public void setPersonalInfo(String first, String last, int month,
int day, int year, int ID)

{

name.setName(first, last);
bDay.setDate(month, day, year);
personID = ID;

}

public String toString()

return ("Name: " + name.toString() + "\n"
+ "Date of birth: " + bDay.toString() + "\n"
+ "Personal ID: " + personID);

}

public PersonalInfo(String first, String last, int month,
int day, int year, int ID)

{

name = new Person(first, last); //instantiate and
//initialize the object name
bDay = new Date(month, day, year); //instantiate and

//initialize the object bDay

personID = ID;

}

public PersonalInfo()
{

name = new Person();
bDay = new Date();
personID = 0;

}

Next, we give the definition of the class PersonalInfo :

public class PersonalInfo
{

private Person name;
private Date bDay;
private int personID;

//Default constructor
//Instance variables are set to the default values
//Postcondition: firstName = ""; lastName = "";
// dMonth = 1; dDay = 1; dYear = 1900;
// personID = 0;
public PersonalInfo()
{

name = new Person();
bDay = new Date();
personID = 0;

}