Make the following modification:

In class Dog:

Add an overridden toString method. Print the type of the class plus the breed separated with a colon and blank. (e.g. Dog: Terrier ) Here is how you can implement that functionality: Use getClass, a method of java.lang.Object. It returns the runtime class of the object. Then call the getSimpleName() method on the runtime class. Like this: this.getClass().getSimpleName()

This will return the type of the class, in our case Dog. Then use the plus operator to add a colon with blank and the breed.

In class DogApp:

Every time you create a new instance of a class add a statement that prints the newly created instance (see Output 1 ) Hint: There is no need to call the toString method explicitly. Compile and run. Your output should look like Output 1 on the right.

Still in DogApp at the end of main do the following: Print the header Using an Array:. This is to make the output more clear to the user. Create an array of Dogs. Use the array initializer to initialize the array with myDog, mySledDog, and myCircusDog Use a foreach loop to loop through all the dogs In the body of the foreach loop do two things:

print the current instance of the dog followed by a new line

call the method actAsDog and pass the current instance of the dog as argument

Compile and run. Now your output should look like Output 2 on the right

Still in DogApp do the following: Inside the foreach loop right before the actAsDog method call check whether the current dog is-a SledDog. You can do that by using the instanceof operator E.g.: if (object1 instanceof Type1) {

 // do something }  

If the current dog happens to be a SledDog then call the method pullSled.

Hint:

In order to be able to access the method pullSled the Dog object still needs to be cast into a SledDog object. This cast is safe because we just checked the type of the Dog object with the instanceof operator. Once we have a SledDog the method pullSled can be called.

Compile and run. Now your output should look like Output 3 on the right

Output 2:

Dog: Greyhound bark bark run 

SledDog: Husky bark bark run 

CircusDog: Terrier bark bark tightrope walking 

Using an Array: 

Dog: Greyhound bark bark run 

SledDog: Husky bark bark run 

CircusDog: Terrier bark bark tightrope walking 

Output 3:

Dog: Greyhound bark bark run 

SledDog: Husky bark bark run 

CircusDog: Terrier bark bark tightrope walking 

Using an Array: 

Dog: Greyhound bark bark run 

SledDog: Husky pulling the sled(MUST COME AFTER, NOT BEFORE, SledDog: Husky.) bark bark run 

CircusDog: Terrier bark bark tightrope walking