Using a client-server architecture, design and implement a multi-threaded server that allows concurrent clients to search the meaning(s) of a word, add a new word, and remove an existing word.

• . All communication will take place via sockets. These sockets can be either TCP or UDP, however, keep in mind that all communication between clients and server is required to be reliable.

Functional requirements

• Query the meaning(s) of a given word

Input: Word to search

Output: Meaning(s) of the word

Error: The client should clearly indicate if the word was not found or if an error

• Add a new word

Input: Word to add, meaning(s)

Output: Status of the operation (e.g., success, duplicate)

Error: The user should be informed if any errors occurred while performing the operation.

• Remove an existing word

Input: Word to remove

Output: Status of the operation (e.g., success, not found)

Error: The user should be informed if any errors occurred while performing the operation

• You are responsible for designing your own message exchange protocol. Some data formats that you may use include XML, JSON, Java Object Serialization, or you may choose to design your own.

. The multi-threaded server may implement a thread-per-request, thread-per-connection, or worker pool architecture. This is a design decision for you to make.

• It is expected that, on both the server and the client side, errors (by means of exception handling) are properly managed. The errors include the following:

• Input from the console for what concerns the parameters passed as command line.
• Network communication (address not reachable, bad data...).
• I/O to and from disk (cannot find the dictionary file, error reading the file, etc...).
• Other errors you might come up with.

User Interface

A Graphical User Interface (GUI) is required for this project. You are free to design it and to use any existing tools and libraries for this purpose. Like javaFX

.

When the server is launched, it loads the dictionary data from a file containing the initial list of words and their meanings. These data is maintained in memory in a structure that enables an efficient word search. When words are added or removed, the data structure is updated to reflect the changes.

1. sample command to start the server is:

> java jar DictionaryServer.jar

Using java language.

The Meaning(s) of the word: Word: ADD Query Remove Figure 2: Client GUI