Скачать или смотреть java socket api

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certainly! java's socket api is part of the `java.net` package and provides the capability to create network applications. it enables communication between different processes over a network using tcp (transmission control protocol).

in this tutorial, we will cover the following topics:

1. **understanding sockets**: what are sockets and how do they work?
2. **creating a simple client-server application**: a simple example involving a client and a server.
3. **running the example**: how to run the server and client applications.
4. **closing connections**: best practices for closing sockets.

1. understanding sockets

a socket is an endpoint for sending or receiving data across a computer network. a socket is bound to a port number so that the transmission control protocol layer can identify the application that data is destined to.

**server socket**: listens for incoming client connections.
**client socket**: initiates a connection to a server.

2. creating a simple client-server application

we'll create a simple client-server application where the server echoes back whatever message it receives from the client.

#### server code



#### client code



3. running the example

1. **compile the code**: save the server code in a file named `echoserver.java` and the client code in `echoclient.java`. open a terminal and navigate to the directory containing the files. compile them using:



2. **run the server**: start the server first in one terminal window:



3. **run the client**: open another terminal window and run the client:



4. **interaction**: you can type messages into the client terminal. the server will echo back whatever you send. type 'exit' to close the connection.

4. closing connections

it’s important to close the socket connections once they are no longer needed. in the code examples above, we are using try-with-resources, which automatically closes the resources when done. this is a good practice to prevent resource ...

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