Create Java Programs:

Develop a simple Server program and a Client program using Java. The Client Code and the Server Code is down below. The Client program should send a personal message to the Server. Make sure the Client program is displaying the command prompt with the sent message visible.

Code Explanation: For each line of code in your Server and Client programs, add comments explaining what the line does.

Enhancing Server Functionality:

Server Setup; Modify your Server program to act as a mailbox.

The server should continuously accept requests from an open Socket.

Message Handling: Implement functionality for the server to parse incoming messages and execute the appropriate method based on the message content. $($You can decide how to implement this.$)$

Message Storage: Save messages from clients in the following scenarios:

Without knowing the addressee or addresser.

Knowing only the addressee.

Knowing both the addressee and addresser.

Client Interaction: Implement a feature where the server makes the sender wait until another client connects. $($This feature can be left as a placeholder for now.$)$

Memory Management: package SocketStuff;

import java.io$.$BufferedReader;

public class Client $\{$

public static void main$($String$[]$ args$)$ throws IOException $\{$

InputStream in $=$ null;

BufferedReader bin $=$ null;

Socket sock $=$ null;

try $\{$

sock $=$ new Socket$("127\mathrm{.}0\mathrm{.}0\mathrm{.}1",5155)$;

in $=$ sock.getInputStream$()$;

bin $=$ new BufferedReader$($new InputStreamReader$($in$))$;

String line;

while$(($line $=$ bin.readLine$())!=$ null$)\{$

System.out.println$($line$)$;

$\}$

$\}$catch$($IOException ioe$)\{$

System.err.println$($ioe$)$;

$\}$finally $\{$

if$($sock $!=$ null$)\{$

sock.close$()$;

$\}$

$\}$

Problems

@ Javadoc

$$ Declaration

Console

Coverage

Decide on the memory capacity of your server:

Limited memory: The server can only store a certain number of messages.

Endless memory: The server can store an unlimited number of messages.

SOCKET PROGRAM: import java.net $.*$;

import java.io $.*$;

public class DateServer

public static void main$($String$[]$ args$)\{$

try $\{$

ServerSocket sock $=$ new ServerSocket$(6013)$;

$/*$ now listen for connections $*/$

while $($true$)\{$

Socket client $=$ sock.accept$()$;

PrintWriter pout $=$ new

PrintWriter$($client$.$getOutputStream$(),$ true$)$;

$/*$ write the Date to the socket $*/$

pout.println$($new java.util.Date$().$toString$())$;

$/*$ close the socket and resume $*/$

$/*$ listening for connections $*/$

client.close$()$;

catch $($I$0$Exception ioe$)\{$

System.err.println$($ioe$)$;

$\}$

$\}$

$\}$