Objectives

Use LinkedList to create a wrapper class.

Make sure to read the sample output.

Create Class: Magazine

Magazine will be a simple class consisting of four fields:

name: string representing the name of the magazine, such as Fashion

edition: int representing the edition number of the magazine such as 10

publishYear: int representing the year the magazine has been published such as 2019

pages: int number of pages of the magazine such as 50

Your Magazine class should have the following methods:

Magazine (name, edition, publishYear,pages) throws InvalidMagazineException // Constructor

String getName(): // Returns a Magazines name

int getEdition(): // Returns a Magazines edition

int getPublishYear()://Returns a Magazines publish year

int getPages() : //Returns a Magazines pages

@Override

public String toString(){

return "Name: " + name + " Edition: " + edition + " Publish Year: "+ publishYear+

" Pages: " + pages;

}

The constructor should throw an InvalidMagazineException if any of the following are true:

The name is an empty string.

The edition is less than 1

The publishYear is less than equal to 2000

The pages is less than equal to zero.

Heres something important to remember: no methods should use standard input or output. They should neither pause to read in input or display any output.

Nodes

The Node class must be represented as a generic class.

The Node class will require these private fields.

T data: The data to hold in the Node

Node next: next Node (if any) in the chain of Nodes.

Node prev: previous Node (if any) in the chain of Nodes.

This class must implement setter/getter for the three variables (3 setter methods and 3 getter methods)

This class must implement three constructors to initialize the variables based on the given values:

public Node(T value)

public Node(T value, Node nextNode)

public Node(T value, Node nextNode, Node prevNode)

Linked List

This class will require the following fields:

Node head: the first Node in the chain

Node tail: the last Node in the chain

int size: Keeps a count of the number of Nodes in the chain

Your LinkedList class must also support the following public methods.

LinkedList(): A default constructor sets both pointers to null and sets the size to 0.

int size(): Returns the size of the LinkedList.

void push_back(T): Creates a new Node and assigns it to the end of the list of Nodes while updating the size by 1.

void push_front(T): Creates a new Node and assigns it to the front of the list of Nodes while updating the size by 1.

T pop_back() throws ListEmptyException: Deletes the Node at the end of the list (or throws a ListEmptyException if this is not possible). Decreases size by 1. Returns the deleted element.

T pop_front() throws ListEmptyException: Deletes the Node at the front of the list (or throws a ListEmptyException if this is not possible). Decreases size by 1. Returns the deleted element.

T at(int) throws ListException: Returns the element stored at the specified index. If the index is out-of-bounds (either for being negative or greater than/equal the size of the list), throw a ListException with the message "Index out of bounds. This method should operate at for accessing the first or last element in a list and at for any element other than the first or the last.

T front() throws ListEmptyException: Returns the first element (throws a ListEmptyException if the list is empty)

T back() throws ListEmptyException : Returns the last element (throws a ListEmptyException if the list is empty)

void printAll(): prints all the nodes in the LinkedList

Create Wrapper Class: Library

Write a wrapper class called Library for a listing of magazines. This wrapper class will maintain a list of all magazines and will return which magazine has the highest number of pages. A wrapper class is a class that acts as decoration for another class (in this case, class LinkedList). Theres only one field to this class:

magazines: LinkedList of type Magazine

Your Library should have the following methods:

public Library() : the constructor that initializes the magazines variable

void addMagazine(Magazine): Adds a magazine to the listing of magazines

int getCount():Returns the number of magazines currently in this data structure

Magazine getMagazineWithHighestNumberOfPages(): Returns the Magazine with the highest number of pages. If there is a tie among multiple Magazines, return the Magazine that was entered first. If the list is empty, throw a ListEmptyException.

Magazine get(int i): Returns the Magazine which is at position i.

int getNumberOfMagazinesHavePagesMoreThan(int pages): Counts and returns the number of Magazines in the data structure that have more pages that the passed parameter.

void printAllMagazines(): calls the methods printAll from the magazines object.

Like the previous class file, this class should not read in any input or display any output. The methods in this class may call the methods of class LinkedList. For example, when inside the method addMagazine you may call the pushback function of the class LinkedList. The methods in this class must catch the exceptions thrown by the Magazine class.

Create the Driver Application

Create a driver application that demonstrates that each of the components of your program work. This class is called LibraryManagement and must contain the main method. Create an empty Library structure with which to work. Create an interactive menu that gives the user the following choices and then performs that choice:

Add Magazine. The program will prompt the user for a name, an edition, a publish year, and a number of pages. The program will create that object and pass it to the data structure via a call to addMagazine.

Get count. Prints to the screen the number of Magazines in the data structure.

Get the Magazine with the highest number of pages. Prints to the screen the name, edition, publish year and pages of the current Magazine with the highest number of pages in the data structure.

Get number of Magazines have the number of pages more than N. Asks the user for an integer and then returns the number of Magazines have the number of pages more than that integer entered. (Entering a length of 0 should return the count of all Magazines.)

Print All magazines: prints all the added magazines

Quit. Quits the application.

What to turn in.

Zip up your Java files with these files:

Magazine.java

Library.java

LinkedList.java

Node.java

LibraryManagement.java

ListException.java

ListEmptyException.java

InvalidMagazineException.java

All your exception classes must inherit from class Exception.

Classes LinkedList.java, Node.java must be in a package called linkedlist

Classes Magazine.java, Library.java, LibraryManagement.java must be in a package called library

Classes ListException.java, ListEmptyException.java, InvalidMagazineException.java must be in a package called linkedlist.exception

A Sample output:

Welcome to my library management system

Choose an option from 1 to 6

1.Add magazine

2.Get magazines count

3.Get the Magazine with the highest number of pages

4.Get number of Magazines have the number of pages more than ?

5.Print all magazines

6.Quit

1

Enter magazine's name: Science Journal

Enter magazine's edition: 25

Enter magazine's publish year: 2020

Enter magazine's pages: 200

The magazine added successfully

Choose an option from 1 to 6

1.Add magazine

2.Get magazines count

3.Get the Magazine with the highest number of pages

4.Get number of Magazines have the number of pages more than ?

5.Print all magazines

6.Quit

1

Enter magazine's name: Chemistry Journal

Enter magazine's edition: 45

Enter magazine's publish year: 2019

Enter magazine's pages: 300

The magazine added successfully

Choose an option from 1 to 6

1.Add magazine

2.Get magazines count

3.Get the Magazine with the highest number of pages

4.Get number of Magazines have the number of pages more than ?

5.Print all magazines

6.Quit

1

Enter magazine's name:

Enter magazine's edition: 20

Enter magazine's publish year: 2009

Enter magazine's pages: 200

Cannot have empty name

Choose an option from 1 to 6

1.Add magazine

2.Get magazines count

3.Get the Magazine with the highest number of pages

4.Get number of Magazines have the number of pages more than ?

5.Print all magazines

6.Quit

2

Number of magazines in the library: 2

Choose an option from 1 to 6

1.Add magazine

2.Get magazines count

3.Get the Magazine with the highest number of pages

4.Get number of Magazines have the number of pages more than ?

5.Print all magazines

6.Quit

3

Name: Chemistry Journal Edition: 45 Publish Year: 2019 Pages: 300

Choose an option from 1 to 6

1.Add magazine

2.Get magazines count

3.Get the Magazine with the highest number of pages

4.Get number of Magazines have the number of pages more than ?

5.Print all magazines

6.Quit

4

Enter the page count:

200

There are 1 magazine(s) having number of the pages more than 200

Choose an option from 1 to 6

1.Add magazine

2.Get magazines count

3.Get the Magazine with the highest number of pages

4.Get number of Magazines have the number of pages more than ?

5.Print all magazines

6.Quit

4

Enter the page count:

100

There are 2 magazine(s) having number of the pages more than 100

Choose an option from 1 to 6

1.Add magazine

2.Get magazines count

3.Get the Magazine with the highest number of pages

4.Get number of Magazines have the number of pages more than ?

5.Print all magazines

6.Quit

4

Enter the page count:

600

There are 0 magazine(s) having number of the pages more than 600

Choose an option from 1 to 6

1.Add magazine

2.Get magazines count

3.Get the Magazine with the highest number of pages

4.Get number of Magazines have the number of pages more than ?

5.Print all magazines

6.Quit

5

Name: Science Journal Edition: 25 Publish Year: 2020 Pages: 200

Name: Chemistry Journal Edition: 45 Publish Year: 2019 Pages: 300

Choose an option from 1 to 6

1.Add magazine

2.Get magazines count

3.Get the Magazine with the highest number of pages

4.Get number of Magazines have the number of pages more than ?

5.Print all magazines

6.Quit

7

Wrong choice! Try again

Choose an option from 1 to 6

1.Add magazine

2.Get magazines count

3.Get the Magazine with the highest number of pages

4.Get number of Magazines have the number of pages more than ?

5.Print all magazines

6.Quit

6

Thank you for using the library system