lab7

labs/lab7/Dog.java

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+// ****************************************************************
+// Dog.java
+//
+// A class that holds a dog's name and can make it speak.
+//
+// ****************************************************************
+public abstract class Dog
+{
+protected String name;
+// ------------------------------------------------------------
+// Constructor -- store 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();
+}

labs/lab7/DogTest.java

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+// ****************************************************************
+// DogTest.java
+//
+// A simple test class that creates a Dog and makes it speak.
+//
+// ****************************************************************
+public class DogTest
+{
+public static void main(String[] args)
+{
+Dog dog = new Yorkshire("Spike");
+System.out.println(dog.getName() + " says " + dog.speak());
+
+Dog Ydog = new Yorkshire("NotSpike");
+System.out.println(Ydog.getName() + " says " + Ydog.speak());
+
+Dog Ldog = new Labrador("NotSpike","Black");
+System.out.println(Ldog.getName() + " says " + Ldog.speak() + " and weights: " + Ldog.avgBreedWeight());
+}
+}

labs/lab7/Labrador.java

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+// ****************************************************************
+// Labrador.java
+//
+// A class derived from Dog that holds information about
+// a labrador retriever. Overrides Dog speak method and includes
+// information about avg weight for this breed.
+//
+// ****************************************************************
+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;
+}
+// ------------------------------------------------------------
+// Big bark -- overrides speak method in Dog
+// ------------------------------------------------------------
+public String speak()
+{
+return "WOOF";
+}
+// ------------------------------------------------------------
+// Returns weight
+// ------------------------------------------------------------
+public int avgBreedWeight()
+{
+return breedWeight;
+}
+}

labs/lab7/Yorkshire.java

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+// ****************************************************************
+// Yorkshire.java
+//
+// A class derived from Dog that holds information about
+// a Yorkshire terrier. Overrides Dog speak method.
+//
+// ****************************************************************
+public class Yorkshire extends Dog
+{
+private final int breedweight = 15;
+public Yorkshire(String name)
+{
+super(name);
+}
+// ------------------------------------------------------------
+// Small bark -- overrides speak method in Dog
+// ------------------------------------------------------------
+public String speak()
+{
+return "woof";
+}
+
+public int avgBreedWeight() {
+    return breedweight;
+}
+}