Assignment 5: The St Petersburg Public Libraries need a new electronic rental system, and it is up to you to build it. St Petersburg has two libraries. Each library offers many books to rent. Customers can print the list of available books, borrow, and return books. We provide two classes, Book and Library, that provide the functionality for the book database. You must implement the missing methods to make these classes work. A . Step One: Implement Book First we need a class to model books. Start by creating a class called Book. Copy and paste the skeleton below. This class defines methods to get the title of a book, find out if it is available, borrow the book, and return the book. However, the skeleton that we provide is missing the implementations of the methods. Fill in the body of the methods with the appropriate code. The main method tests the methods. When you run the program, the output should be: Title (should be The Da Vinci Code): The Da Vinci Code Rented? (should be false): false Rented? (should be true): true Rented? (should be false): false Hint: Look at the main method to see how the methods are used, then fill in the code for each method. (25 points) B. Step Two: Implement Library Next we need to build the class that will represent each library, and manage a collection of books. All libraries have the same hours: 9 AM to 5 PM daily. However, they have different addresses and book collections (i.e., arrays of Book objects). Create a class called Library. Copy and paste the skeleton below. We provide a main method that creates two libraries, then performs some operations on the books. However, all the methods and member variables are missing. You will need to define and implement the missing methods. Read the main method and look at the compile errors to figure out what methods are missing. Notes • Some methods will need to be static methods, and some need to be instance methods. • Be careful when comparing Strings objects. Use string1.equals(string2) for comparing the contents ofstring1 and string2. • You should get a small part working at a time. Start by commenting the entire main method, then uncomment it line by line. Run the program, get the first lines working, then uncomment the next line, get that working, etc. You can comment a block of code in Eclipse by selecting the code, then choosing Source → Toggle Comment. Do the same again to uncomment it. • You must not modify the main method. The output when you run this program should be similar to the following: Library hours: Libraries are open daily from 9am to 5pm. Library addresses: 10 Main St. 228 Liberty St. Borrowing The Lord of the Rings: You successfully borrowed The Lord of the Rings Sorry, this book is already borrowed. Sorry, this book is not in our catalog. Books available in the first library: The Da Vinci Code Le Petit Prince A Tale of Two Cities Books available in the second library: No book in catalog Returning The Lord of the Rings: You successfully r.

1. Assignment
5:
The
St
Petersburg
Public
Libraries
need
a
new
electronic
rental
system,
and
it
is
up
to
you
to
build
it.
St
Petersburg
has
two
libraries.
Each
library
offers
many
books
to
rent.
Customers

2. can
print
the
list
of
available
books,
borrow,
and
return
books.
We
provide
two
classes,
Book
and
Library,
that
provide
the
functionality
for
the
book
database.
You
must
implement
the
missing
methods
to
make
these
classes

3. work.
A
.
Step
One:
Implement
Book
First
we
need
a
class
to
model
books.
Start
by
creating
a
class
called
Book.
Copy
and
paste
the
skeleton
below.
This
class
defines
methods
to
get
the
title

4. of
a
book,
find
out
if
it
is
available,
borrow
the
book,
and
return
the
book.
However,
the
skeleton
that
we
provide
is
missing
the
implementations
of
the
methods.
Fill
in
the
body
of
the
methods

5. with
the
appropriate
code.
The
main
method
tests
the
methods.
When
you
run
the
program,
the
output
should
be:
Title
(should
be
The
Da
Vinci
Code):
The
Da
Vinci
Code
Rented?
(should
be
false):
false
Rented?

6. (should
be
true):
true
Rented?
(should
be
false):
false
Hint:
Look
at
the
main
method
to
see
how
the
methods
are
used,
then
fill
in
the
code
for
each
method.
(25
points)
B.
Step
Two:
Implement

7. Library
Next
we
need
to
build
the
class
that
will
represent
each
library,
and
manage
a
collection
of
books.
All
libraries
have
the
same
hours:
9
AM
to
5
PM
daily.
However,
they
have
different
addresses

8. and
book
collections
(i.e.,
arrays
of
Book
objects).
Create
a
class
called
Library.
Copy
and
paste
the
skeleton
below.
We
provide
a
main
method
that
creates
two
libraries,
then
performs
some
operations
on
the
books.
However,

9. all
the
methods
and
member
variables
are
missing.
You
will
need
to
define
and
implement
the
missing
methods.
Read
the
main
method
and
look
at
the
compile
errors
to
figure
out
what
methods
are
missing.
Notes

10. •
Some
methods
will
need
to
be
static
methods,
and
some
need
to
be
instance
methods.
•
Be
careful
when
comparing
Strings
objects.
Use
string1.equals(string2)
for
comparing
the
contents
ofstring1
and
string2.
•
You
should
get

11. a
small
part
working
at
a
time.
Start
by
commenting
the
entire
main
method,
then
uncomment
it
line
by
line.
Run
the
program,
get
the
first
lines
working,
then
uncomment
the
next
line,
get
that
working,

12. etc.
You
can
comment
a
block
of
code
in
Eclipse
by
selecting
the
code,
then
choosing
Source
→
Toggle
Comment.
Do
the
same
again
to
uncomment
it.
•
You
must
not
modify
the
main
method.
The

13. output
when
you
run
this
program
should
be
similar
to
the
following:
Library
hours:
Libraries
are
open
daily
from
9am
to
5pm.
Library
addresses:
10
Main
St.
228
Liberty
St.
Borrowing
The
Lord
of
the
Rings:

14. You
successfully
borrowed
The
Lord
of
the
Rings
Sorry,
this
book
is
already
borrowed.
Sorry,
this
book
is
not
in
our
catalog.
Books
available
in
the
first
library:
The
Da
Vinci
Code
Le
Petit
Prince
A

15. Tale
of
Two
Cities
Books
available
in
the
second
library:
No
book
in
catalog
Returning
The
Lord
of
the
Rings:
You
successfully
returned
The
Lord
of
the
Rings
Books
available
in
the
first
library:
The
Da

16. Vinci
Code
Le
Petit
Prince
A
Tale
of
Two
Cities
The
Lord
of
the
Rings
Book.java
public
class
Book
{
String
title;
boolean
borrowed;
//
Creates
a
new
Book
public
Book(String
bookTitle)
{
//
Implement
this

17. method
}
//
Marks
the
book
as
rented
public
void
borrowed()
{
//
Implement
this
method
}
//
Marks
the
book
as
not
rented
public
void
returned()
{
//
Implement
this
method
}
//
Returns
true

18. if
the
book
is
rented,
false
otherwise
public
boolean
isBorrowed()
{
//
Implement
this
method
}
//
Returns
the
title
of
the
book
public
String
getTitle()
{
//
Implement
this
method
}
public
static
void
main(String[]

19. arguments)
{
//
Small
test
of
the
Book
class
Book
example
=
new
Book("The
Da
Vinci
Code");
System.out.println("Title
(should
be
The
Da
Vinci
Code):
"
+
example.getTitle());
System.out.println("Borrowed?
(should
be
false):
"
+
example.isBorrowed());
example.rented();
System.out.println("Borrowed?

20. (should
be
true):
"
+
example.isBorrowed());
example.returned();
System.out.println("Borrowed?
(should
be
false):
"
+
example.isBorrowed());
}
}
Library.java
public
class
Library
{
//
Add
the
missing
implementation
to
this
class
public
static
void
main(String[]
args)
{
//

21. Create
two
libraries
Library
firstLibrary
=
new
Library("10
Main
St.");
Library
secondLibrary
=
new
Library("228
Liberty
St.");
//
Add
four
books
to
the
first
library
firstLibrary.addBook(new
Book("The
Da
Vinci
Code"));
firstLibrary.addBook(new
Book("Le
Petit
Prince"));
firstLibrary.addBook(new
Book("A

22. Tale
of
Two
Cities"));
firstLibrary.addBook(new
Book("The
Lord
of
the
Rings"));
//
Print
opening
hours
and
the
addresses
System.out.println("Library
hours:");
printOpeningHours();
System.out.println();
System.out.println("Library
addresses:");
firstLibrary.printAddress();
secondLibrary.printAddress();
System.out.println();
//
Try
to
borrow
The
Lords
of
the
Rings
from

23. both
libraries
System.out.println("Borrowing
The
Lord
of
the
Rings:");
firstLibrary.borrowBook("The
Lord
of
the
Rings");
firstLibrary.borrowBook("The
Lord
of
the
Rings");
secondLibrary.borrowBook("The
Lord
of
the
Rings");
System.out.println();
//
Print
the
titles
of
all
available
books
from
both
libraries
System.out.println("Books

24. available
in
the
first
library:");
firstLibrary.printAvailableBooks();
System.out.println();
System.out.println("Books
available
in
the
second
library:");
secondLibrary.printAvailableBooks();
System.out.println();
//
Return
The
Lords
of
the
Rings
to
the
first
library
System.out.println("Returning
The
Lord
of
the
Rings:");
firstLibrary.returnBook("The
Lord
of
the

25. Rings");
System.out.println();
//
Print
the
titles
of
available
from
the
first
library
System.out.println("Books
available
in
the
first
library:");
firstLibrary.printAvailableBooks();
}
}
(25
points)
C.
File
Encryption
is
the
science
of
writing
the
contents
of
a
file

26. in
a
secret
code.
Your
encryption
program
should
work
like
a
filter,
reading
the
contents
of
one
file,
modifying
the
data
into
a
code,
and
then
writing
the
coded
contents
out
to
a
second
file.
The

27. second
file
will
be
a
version
of
the
first
file,
but
written
in
a
secret
code.
Although
there
are
complex
encryption
techniques,
you
should
come
up
with
a
simple
one
of
your
own.
For
example,
you

28. could
read
the
first
file
one
character
at
a
time,
and
add
10
to
the
character
code
of
each
character
before
it
is
written
to
the
second
file.
(25
points)
Submission
Instructions
Zip
all
your
source

29. code
files
in
a
zip
labeled
with
your
lastname_firstname_studentnumber.zip
and
submit
in
the
assignment
4
dropbox.
For
part
C,
supply
a
test
file
to
test
with.