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Asked: 2026-05-26T07:49:25+00:00

I am trying to create a simple chat program using Java. I have create

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I am trying to create a simple chat program using Java. I have create TCP server that accepts multiple clients. Currently the clients message to server.

  1. How can I broadcast the message from one client to all the others?
  2. How can I pair of two clients. Send and recieve message to eachother?
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  1. Editorial Team

    1.How can I broadcast the message from one client to all the others?

    Use a subscribe/notify mechanism

    2.How can I pair of two clients. Send and recieve message to eachother?

    Clients must have a server socket listening as well.

    UPDATE:
    Your server will have some sort of registry where all your clients register for notifications.
    The clients open a server socket that waits for messages.
    When a client wants to send a message then it connects to the server, sends the message and the server can either send the message to all registered clients or to a specific client that is supposed to receive the message.At this part the server connects to the client’s server socket and sends the message.
    Another option is not to open a server socket at the client, but the client does polling to see if the server has a message available

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