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.

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

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. 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(&#34;	\TEEE MM dd&#34;);Stringreturn sender + &#34;
Subject: &#34;+ subject +&#34; &#34; + sdf.format(dgetMessageTextHeader()ate) +&#34;
&#34; +messageText.split(&#34;\n&#34;)[0] + &#34;
&#34;;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)

Accepted Answer

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