pom.xml

     <groupId>io.zipcoder</groupId>
     <artifactId>polymorphism</artifactId>
     <version>1.0-SNAPSHOT</version>
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
 
 
 </project>

src/main/java/io/zipcoder/polymorphism/Cat.java

+package io.zipcoder.polymorphism;
+
+public class Cat extends Pets {
+
+    public Cat(String name) {
+        super(name);
+    }
+    public String speak (){
+        return "meow";
+
+    }
+}

src/main/java/io/zipcoder/polymorphism/Dog.java

+package io.zipcoder.polymorphism;
+
+public class Dog extends Pets {
+    public Dog(String name) {
+        super(name);
+    }
+
+
+
+
+
+
+    public String speak (){
+        return "Woof, Woof";
+
+    }
+}

src/main/java/io/zipcoder/polymorphism/Dolphin.java

+package io.zipcoder.polymorphism;
+
+public class Dolphin  extends Pets{
+    public Dolphin(String name) {
+        super(name);
+    }
+    public String speak (){
+        return "I'm adorable";
+    }
+}

src/main/java/io/zipcoder/polymorphism/MainApplication.java

 package io.zipcoder.polymorphism;
 
+import java.util.*;
 /**
  * Created by leon on 11/6/17.
  */
 public class MainApplication {
+
+
+    public static void main (String [] args){
+
+        Scanner input = new Scanner(System.in);
+
+        System.out.println("Enter the number of pets you have:  ");
+        int numOfPets = input.nextInt();
+
+        if (numOfPets>0) {
+            Pets[] pets = new Pets[numOfPets];
+            for(int i=0; i < pets.length; i++) {
+                System.out.println("What kind is it?: ");
+                System.out.println("Cat, dog or dolphin? ");
+                String type = input.next();
+
+                if(type.equalsIgnoreCase("cat"))
+                {
+                    System.out.println("What is its name?: ");
+                    String name = input.next();
+                    Cat cat = new Cat(name);
+                    System.out.println(name + "  says " +cat.speak());
+
+
+                } else if(type.equalsIgnoreCase("dog")) {
+                    System.out.print("What is its name: ");
+                    String name = input.next();
+                    Dog dog = new Dog(name);
+                    System.out.println(name + "  says " +dog.speak());
+
+                } else if(type.equalsIgnoreCase("dolphin"))
+                {
+                    System.out.println("What is its name?: ");
+                    String name = input.next();
+                    Dolphin dolphin = new Dolphin(name);
+                    System.out.println(name + "  says " +dolphin.speak());
+
+                }else
+                    {
+                        System.out.println("Wrong answer! ");
+                    }
+            }
+        }
+
+    }
 }

src/main/java/io/zipcoder/polymorphism/Pets.java

+package io.zipcoder.polymorphism;
+
+abstract public class Pets {
+    private String name;
+
+
+
+    public Pets (String petName ){
+        this.name=petName;
+
+    }
+
+
+
+    public String speak (){
+        return " ";
+    }
+
+    public void setName(String name) {
+
+        this.name=name;
+    }
+
+    public String getName (String name){
+
+        return name;
+    }
+
+}

src/test/java/io/zipcoder/polymorphism/MainApplicationTest.java

 package io.zipcoder.polymorphism;
 
+import org.junit.Assert;
+import org.junit.Test;
+
 /**
  * Created by leon on 11/6/17.
  */
 public class MainApplicationTest {
+
+
+    @Test
+   public void catTest() {
+                // given
+            Cat cat = new Cat("Lola");
+            String expected = "meow";
+            String actual=cat.speak();
+                //then
+            Assert.assertEquals(expected, actual);
+           }
+
+        @Test
+        public void dogTest() {
+                // given
+                Dog dog = new Dog("Zummy");
+                String expected = "Woof, Woof";
+                String actual=dog.speak();
+                //then
+                Assert.assertEquals(expected, actual);
+        }
+
+        @Test
+        public void dolphinTest() {
+                // given
+                Dolphin dolphin = new Dolphin ("Dayhani");
+                String expected = "I'm adorable";
+                String actual=dolphin.speak();
+                //then
+                Assert.assertEquals(expected, actual);
+        }
+
 }