Object-Oriented Programming with Java 
(a) Give three differences between an interface and an abstract class in Java. [3 marks] 
(b) A novice programmer writes the following code in order to be able to completely clone an object of type Car. 
public class Tyre { private int treadRemaining; 
public void SetTread(int t) { treadRemaining=t; } 
public int GetTread() { return treadRemaining; } } 
public class Car extends Vehicle implements Cloneable { private Tyre tyres[] = new Tyre[4]; 
public Car() { for (int i=0; i<4; i++) tyres[i] = new Tyre(); }  public Object clone() throws CloneNotSupportedException { Car c = new Car();  c.tyres = this.tyres; return c; } }  (i) Explain what it means for the treadRemaining field to be private. Explain why it is good programming practice for such fields to be private. [3 marks]  (ii) Identify the type of interface that Cloneable is. What is the defining characteristic of such interfaces? [2 marks]  (iii) Identify and explain two reasons why this code may not function as intended. [4 marks]  (iv) Rewrite the code to address the problems you have identified and allow Car objects to be fully cloned. [8 marks] 1

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
The price is based on these factors:
Academic level
Number of pages
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more