For this project, you will implement an email client-server simulator using the object-oriented design diagramed below. The class diagram above shows class attributes (members) and methods (operations). Operations are denoted with a plus. The diamonds indicate an aggregation relationship between the connected classes. For example, a mailbox list can have one or many mailboxes. A Mailbox can have one or many messages. You will therefore need data structures container objects (lists) to contain these types of objects, as we have seen in previous exercises. All class attributes are private unless denoted otherwise and therefore must be accessed with constructors. getters, ord setters. Constructors are a preferred way to set class attributes. Constructors, setters, getters, and toString methods can be generated by IntelliJ. Check the IntelliJ documentation for how to use the Generate feature. Messages are simultaneously sent and received. Therefore, a Message is simultaneously stored in the inbox of the recipient and the sent box of the sender. A Mailbox object, as defined, contains both inbox messages and sent messages and the operations are outlined below. Mailboxes are linked to a user. A Mailbox contains two lists of type ArrayList<Message>, one for the inbox, one for the sent box.Finally, a MailboxList contains any number of user Mailboxes, one Mailbox per user. ChromeFileEditViewHistoryBookmarksPeopleTabWindowHelp88% OSun 8:12 PMM SkinnyFit Order CorS delaGATE - Delawar xO Project 2: Email Clie xO Read Simple CSV Fi Xb Answered: The two xO (2) Navigation in Int x+A canvas.dccc.edu/courses/27620/assignments/513560Scree2020-10Method (Option)FunctiontisPMArrayListgetSentMessages()Returns a list of message summaries for sent messagebox.Scree2020-10ArrayList getMessages()Returns a list of message summaries for inbox messages.Void addSentMessage(Message)Adds a sentMessage to sentMessages ArrayListScree2020-10Void addMessage(Message)Adds an inbox Message to messages ArrayListMessage getMessage(int i)Retrieves the ith inbox messageArrays andMessage getSentMessage(int i)Retrieves the ith sent messagePackmvoid removeSentMessage(int i)Remove ith sent messagevoid removeMessage(int i)Remove ith inbox messageMailbox List ClassMethod (Option)Functionstatic Mailbox getUserMailboxReturns Mailbox by userE Maven ChromeFileEditViewHistoryBookmarksPeopleTabWindowHelp88% OSun 8:11 PMM SkinnyFit Order CorS delaGATE - Delawar XO Project 2: Email Clie xA Read Simple CSV Fi xb Answered: The two xO (2) Navigation in Int x+A canvas.dccc.edu/courses/27620/assignments/513560Scree2020-10Message ClasstlsPMMethod (Option)FunctionAppend a line to the messageText. If the message already containstext, add a newline then add the line to be appended.Scree2020-10void append(String line)Formats a string contained a summary of the message suitable fordisplay in the inbox or sent message box.Scree2020-10public String getMessageHeader() {SimpleDateFormat sdf = new SimpleDateFormat("\t\TEEE MM dd");Stringreturn sender + "\nSubject: "+ subject +" " + sdf.format(dgetMessageTextHeader()ate) +"\n" +messageText.split("\\n")[0] + "\n";Arrays and}PackmCreates a formatted string contained the To, From. Subject, Date, andtoString()Message Text of a Message.print()Sends the toString() results to the displaysend(sender, recipient,Creates a Message including sender, recipient, subject, and date.MessageText is added with append method.subject)

//Message.javaimport java.util.Calendar;import java.util.Date;public class Message{ private String…

Answered: For this project, you will implement an…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

For this project, you will implement an email client-server simulator using the object-oriented design diagramed below.

The class diagram above shows class attributes (members) and methods (operations). Operations are denoted with a plus. The diamonds indicate an aggregation relationship between the connected classes. For example, a mailbox list can have one or many mailboxes. A Mailbox can have one or many messages. You will therefore need data structures container objects (lists) to contain these types of objects, as we have seen in previous exercises.

All class attributes are private unless denoted otherwise and therefore must be accessed with constructors. getters, ord setters. Constructors are a preferred way to set class attributes. Constructors, setters, getters, and toString methods can be generated by IntelliJ. Check the IntelliJ documentation for how to use the Generate feature.
Messages are simultaneously sent and received. Therefore, a Message is simultaneously stored in the inbox of the recipient and the sent box of the sender.
A Mailbox object, as defined, contains both inbox messages and sent messages and the operations are outlined below. Mailboxes are linked to a user. A Mailbox contains two lists of type ArrayList<Message>, one for the inbox, one for the sent box.
Finally, a MailboxList contains any number of user Mailboxes, one Mailbox per user.

Chrome
File
Edit
View
History
Bookmarks
People
Tab
Window
Help
88% O
Sun 8:12 PM
M SkinnyFit Order Cor
S delaGATE - Delawar x
O Project 2: Email Clie x
O Read Simple CSV Fi X
b Answered: The two x
O (2) Navigation in Int x
+
A canvas.dccc.edu/courses/27620/assignments/513560
Scree
2020-10
Method (Option)
Function
tis
PM
ArrayList<Message>
getSentMessages()
Returns a list of message summaries for sent message
box.
Scree
2020-10
ArrayList<Message> getMessages()
Returns a list of message summaries for inbox messages.
Void addSentMessage(Message)
Adds a sentMessage to sentMessages ArrayList
Scree
2020-10
Void addMessage(Message)
Adds an inbox Message to messages ArrayList
Message getMessage(int i)
Retrieves the ith inbox message
Arrays and
Message getSentMessage(int i)
Retrieves the ith sent message
Pack
m
void removeSentMessage(int i)
Remove ith sent message
void removeMessage(int i)
Remove ith inbox message
Mailbox List Class
Method (Option)
Function
static Mailbox getUserMailbox
Returns Mailbox by user
E Maven

Chrome
File
Edit
View
History
Bookmarks
People
Tab
Window
Help
88% O
Sun 8:11 PM
M SkinnyFit Order Cor
S delaGATE - Delawar X
O Project 2: Email Clie x
A Read Simple CSV Fi x
b Answered: The two x
O (2) Navigation in Int x
+
A canvas.dccc.edu/courses/27620/assignments/513560
Scree
2020-10
Message Class
tls
PM
Method (Option)
Function
Append a line to the messageText. If the message already contains
text, add a newline then add the line to be appended.
Scree
2020-10
void append(String line)
Formats a string contained a summary of the message suitable for
display in the inbox or sent message box.
Scree
2020-10
public String getMessageHeader() {
SimpleDateFormat sdf = new SimpleDateFormat("\t\TEEE MM dd");
String
return sender + "\nSubject: "
+ subject +
" " + sdf.format(d
getMessageTextHeader()
ate) +
"\n" +
messageText.split("\\n")[0] + "\n";
Arrays and
}
Pack
m
Creates a formatted string contained the To, From. Subject, Date, and
toString()
Message Text of a Message.
print()
Sends the toString() results to the display
send(sender, recipient,
Creates a Message including sender, recipient, subject, and date.
MessageText is added with append method.
subject)

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