Given the driver class PetsDemo.java and the (mostly) complete abstract Pet class, create a Cat class and a Dog class to extend Pet, and provide concrete methods for the abstract getAgeInHumanYears(). The Pet class itself also has a getAge() method that needs to be finished before it will work correctly.

Notice that we're making use of the java.time package to make objects like dob (date of birth) to represent a date, or age to model a period of time. Make sure to use the API documentation so that you understand those data types.

LocalDateDemo code:

package lab3;

import java.time.LocalDate;

import java.time.Month;

import java.time.Period;

import java.util.Scanner;

public class Localdatedemo {

// check out the Java API to see more about how to use the Period and LocalDate classes

// https://docs.oracle.com/en/java/javase/11/docs/api/index.html

public static void main(String[] args) {

LocalDate today = LocalDate.now(); // Date today

LocalDate bday = LocalDate.of(1972, Month.MAY, 3); // Birth date (using enum type for month)

Period difference = Period.between(bday, today); // Amount of time

System.out.println(difference.getDays());

System.out.println(difference.getMonths());

System.out.println(difference.getYears());

System.out.println(bday.toString());

Scanner input = new Scanner(System.in);

System.out.print("Month: ");

int month = input.nextInt();

System.out.print("Day: ");

int day = input.nextInt();

System.out.print("Year: ");

int year = input.nextInt();

LocalDate bornOn = LocalDate.of(year, month, day);

Period age = Period.between(bornOn, today);

System.out.println("Age is " + age.getYears() + " years.");

input.close();

}

}

Pet class code:

package lab3;

import java.time.LocalDate;

import java.time.Period;

public abstract class Pet {

// Fields

private String name;

private LocalDate dob;

// Constructor

public Pet (String n, int y, int m, int d) {

this.name = n;

this.dob = LocalDate.of(y, m, d);

}

// Methods

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public void setDob(int y, int m, int d) {

this.dob = LocalDate.of(y, m, d);

}

public int getAge() {

//TODO: Return the pet's age in number of actual years

return 0;

}

abstract public int getAgeInHumanYears();

// TODO: provide concrete methods by creating Cat and Dog classes to extend Pet.

// https://www.akc.org/expert-advice/health/how-to-calculate-dog-years-to-human-years/

// https://www.purina.co.uk/cats/key-life-stages/ageing/cats-age-in-human-years

}

Pet Demo code:

package lab3;

public class PetDemo {

public static void main(String[] args) {

// You will fix this by creating Cat and Dog classes.

// No need to modify this file.

Pet pet1 = new Dog("Chuki", 2016, 03, 03);

Pet pet2 = new Cat("Aspen", 2009, 11, 20);

System.out.println(pet1.getName() + " is " + pet1.getAgeInHumanYears() + " in human years.");

System.out.println(pet2.getName() + " is " + pet2.getAgeInHumanYears() + " in human years.");

pet2.setName("Old Aspy");

System.out.println(pet2.getName() + " is actually " + pet2.getAge() + " years old.");

}

}