We need to program a multithreaded chat programm. I have already started to program it, but the server only processes the first message

Main task: Fix the code so that multiple clients can log on and server receives and sends all messages to all clients or one specific client if message starts with @username.

All other TODOs in the file can be ignored.

Please do not use any code from web as my teacher will check for plagiarism with an MIT software.

Run SQL*Plus iggy/oracle. (It is assumed that you have already run theLoadDB.sql script last week that built the required user and tables.)
Type SPOOL c:cis4210M3spool.txt .
Write a single SQL statement that lists all suppliers supplying only hammers WITHOUT using the difference operation. (A join or subquery would be appropriate.)
When finished, stop the spooling and exit the program. (You may edit the spool file for clarity if you wish.)
Submit your text document with the file name c:cis4210M3spool.txt .

Run SQL*Plus iggy/oracle. (It is assumed that you have already run theLoadDB.sql script last week that built the required user and tables.)
Type SPOOL c:cis4210M3spool.txt .
Write a single SQL statement that lists all suppliers supplying only hammers WITHOUT using the difference operation. (A join or subquery would be appropriate.)
When finished, stop the spooling and exit the program. (You may edit the spool file for clarity if you wish.)
Submit your text document with the file name c:cis4210M3spool.txt .

This is Grade 10 work only. (class ICS2O, Canada)
Negotiations on price may be allowed depending on the work you offer!
Only need minimum 60% of this done.
These are the instructions I was given https://pastebin.com/trGAsW4M
rubric: https://snipboard.io/fFyEw7.jpg (proposal/worklog not needed)

I had an idea for a crossyroad/frogger style 2d top down game
I only require a few levels (or random generation system)
Mainly just need the basic code, you don’t need to make it look great.
External assets (e.g. images) are allowed

This is Grade 10 work only. (class ICS2O, Canada)
Negotiations on price may be allowed depending on the work you offer!
Only need minimum 60% of this done.
These are the instructions I was given https://pastebin.com/trGAsW4M
rubric: https://snipboard.io/fFyEw7.jpg (proposal/worklog not needed)

I had an idea for a crossyroad/frogger style 2d top down game
I only require a few levels (or random generation system)
Mainly just need the basic code, you don’t need to make it look great.
External assets (e.g. images) are allowed

This is Grade 10 work only. (class ICS2O, Canada)
Negotiations on price may be allowed depending on the work you offer!
Only need minimum 60% of this done.
These are the instructions I was given https://pastebin.com/trGAsW4M
rubric: https://snipboard.io/fFyEw7.jpg (proposal/worklog not needed)

I had an idea for a crossyroad/frogger style 2d top down game
I only require a few levels (or random generation system)
Mainly just need the basic code, you don’t need to make it look great.
External assets (e.g. images) are allowed

This is Grade 10 work only. (class ICS2O, Canada)
Negotiations on price may be allowed depending on the work you offer!
Only need minimum 60% of this done.
These are the instructions I was given https://pastebin.com/trGAsW4M
rubric: https://snipboard.io/fFyEw7.jpg (proposal/worklog not needed)

I had an idea for a crossyroad/frogger style 2d top down game
I only require a few levels (or random generation system)
Mainly just need the basic code, you don’t need to make it look great.
External assets (e.g. images) are allowed

This is Grade 10 work only. (class ICS2O, Canada)
Negotiations on price may be allowed depending on the work you offer!
Only need minimum 60% of this done.
These are the instructions I was given https://pastebin.com/trGAsW4M
rubric: https://snipboard.io/fFyEw7.jpg (proposal/worklog not needed)

I had an idea for a crossyroad/frogger style 2d top down game
I only require a few levels (or random generation system)
Mainly just need the basic code, you don’t need to make it look great.
External assets (e.g. images) are allowed

This is Grade 10 work only. (class ICS2O, Canada)
Negotiations on price may be allowed depending on the work you offer!
Only need minimum 60% of this done.
These are the instructions I was given https://pastebin.com/trGAsW4M
rubric: https://snipboard.io/fFyEw7.jpg (proposal/worklog not needed)

I had an idea for a crossyroad/frogger style 2d top down game
I only require a few levels (or random generation system)
Mainly just need the basic code, you don’t need to make it look great.
External assets (e.g. images) are allowed

This is Grade 10 work only. (class ICS2O, Canada)
Negotiations on price may be allowed depending on the work you offer!
Only need minimum 60% of this done.
These are the instructions I was given https://pastebin.com/trGAsW4M
rubric: https://snipboard.io/fFyEw7.jpg (proposal/worklog not needed)

I had an idea for a crossyroad/frogger style 2d top down game
I only require a few levels (or random generation system)
Mainly just need the basic code, you don’t need to make it look great.
External assets (e.g. images) are allowed