Need help in a Java project for creating messaging application

C1. Core Functionality ● Working server: server compiles and runs, able to accept concurrent connections from multiple clients. ● Working client compiles and runs. Client does not crash nor deadlock, client can connect to server and communicate by exchanging information. ● Multiple clients connecting concurrently, publishing messages, subscribing to channels, unsubscribing from channels. Clients should be able to exchange at least 10 text-based messages without crash or deadlocks. ● Your client is able to attach multimedia files such as pictures. Receiving clients should be able to display(automatically without user intervention) and download the attached files. ● GUI displays messages published on subscribed channels automatically(without user intervention). C2. Quality of your GUI: Look and feel, intuitiveness, fewer clicks, etc. C3. Demonstration: Demonstration via recorded video/screencast (not more than 15 minutes) of your prototype’s core functionalities and extensions (if implemented) as well as the GUI. C4. Extensions ● If you implement persistence, your server should be able to automatically retrieve persisted messages (including attachments) when killed. ● If you implement message searching or any other functionality, this should be demonstrated. C5. README File