Question

Create a class named Horse that contains the following data fields:

• name - of type String
• color - of type String
• birthYear - of type int

Include get and set methods for these fields.

Next, create a subclass named RaceHorse, which contains an additional field, races(of type int), that holds the number of races in which the horse has competed and additional methods to get and set the new field.

DemoHorses.java

public class DemoHorses
{
public static void main(String args[])
{
Horse horse1 = new Horse();
RaceHorse horse2 = new RaceHorse();
horse1.setName("Old Paint");
horse1.setColor("brown");
horse1.setBirthYear(2009);
horse2.setName("Champion");
horse2.setColor("black");
horse2.setBirthYear(2011);
horse2.setRaces(4);
System.out.println(horse1.getName() + " is " +
horse1.getColor() + " and was born in " + horse1.getBirthYear() + ".");
System.out.println(horse2.getName() + " is " +
horse2.getColor() + " and was born in " + horse2.getBirthYear() + ".");
System.out.println(horse2.getName() + " has been in " +
horse2.getRaces() + " races.");
}
}

horse.java

public class Horse
{
// Define the Horse class here
}

RaceHorse.java

public class RaceHorse
{
// Define the RaceHorse class here
}

Answer 1

public class Horse {

    private String name;
    private String color;
    private int birthYear;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    public int getBirthYear() {
        return birthYear;
    }

    public void setBirthYear(int birthYear) {
        this.birthYear = birthYear;
    }
}

public class RaceHorse extends Horse {

    private int races;

    public int getRaces() {
        return races;
    }

    public void setRaces(int races) {
        this.races = races;
    }
}