1. Draw a UML class diagram for the exercise (code is blow)

2. Given an existing class X and you would like to reuse it to create a new class, when do you utilize inheritance instead of aggregation?

public class DogTest

{

public static void main(String[] args)

{

Dog objLabrador = new Labrador("Jackson", "yellow");

Dog objYorkshire = new Yorkshire("Layla", "Black and Gold");

System.out.println(objLabrador.getName() + " says " + objLabrador.speak());

System.out.println("The average weight of a Labrador is " + objLabrador.avgBreedWeight());

System.out.println();

System.out.println(objYorkshire.getName() + " says " + objYorkshire.speak());

System.out.println("The average weight of a Yorkshire is " + objYorkshire.avgBreedWeight());

}

}

public abstract class Dog

{

protected String name;

public Dog(String name)

{

this.name = name;

}

// ------------------------------------------------------------

// Returns the dog's name

// ------------------------------------------------------------

public String getName()

{

return name;

}

// ------------------------------------------------------------

// Returns a string with the dog's comments

// ------------------------------------------------------------

public String speak()

{

return "Woof";

}

public abstract int avgBreedWeight();

}

public class Labrador extends Dog

{

private String color; //black, yellow, or chocolate?

private int breedWeight = 75;

public Labrador(String name, String color)

{

super(name);

this.color = color;

}

public String speak()

{

return "WOOF";

}

public int avgBreedWeight()

{

return breedWeight;

}

}

public class Yorkshire extends Dog

{

private String color;

private int breedWeight = 13;

public Yorkshire(String name, String color)

{

super(name);

this.color = color;

}

public String speak()

{

return "woof";

}

public int avgBreedWeight()

{

return breedWeight;

}

}