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Please edit your post and wrap your code with code tags:


YOUR CODE HERE

to get highlighting and preserve formatting.

Also there should only be ONE statement per line. The code that was...

Sorry, I don't know anything about your server.

Can you explain what "not working" means?
If there are error messages, copy the full text and paste it here.

Do a Search on this forum (or on the internet) for sample code.

One way is to use Sockets.

Sorry, video chat is too complicated. I don't know if I have seen code to do that.
There are lots of text chat examples here on the forum and on the internet. Do a Search for them.

The Socket class is part of the Java SE. Not the others.

Sockets are a basic class. Other classes build on them. I imagine that someone has written some higher level classes and methods that will help you. Those classes are not part of Java SE. You'll...

I think sockets can be used to send and receive data between internet sites.

That is too complicated a project for someone that wants to learn java.
Start with the basics and build your knowledge before trying something so complicated.

One good source for learning java is the tutorial. This link indexes many topics:
The Really Big Index