Скачать или смотреть java rxtx library

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the rxtx library is a java library that allows communication with serial and parallel ports. it is commonly used for interfacing with hardware devices like arduino, gps modules, and other serial devices. below is a tutorial on how to set up and use the rxtx library in a java application.

step 1: setting up the rxtx library

1. *download the rxtx library:*
you can download the rxtx library from the following link:
[rxtx download](https://sourceforge.net/projects/rxtx...)

choose the appropriate version for your operating system (windows, linux, or macos).

2. *add rxtx to your project:*
extract the downloaded files.
locate the rxtxcomm.jar file and add it to your java project’s build path.
depending on your os, you will also need to place the native library (dll for windows, so for linux, or dylib for macos) in a location that java can access. this location can be set with the `-djava.library.path` option when running your java program.

step 2: importing the library

once you have set up rxtx, you need to import it into your java application:



step 3: sample code to communicate with a serial port

below is a simple java program that demonstrates how to open a serial port, send data, and read from it.

#### example code



step 4: running the program

1. make sure you have your serial device connected to the appropriate port.
2. adjust the port name in `example.initialize("com3");` to match your setup.
3. compile and run your java program.

important notes:

*permissions:* on linux, you may need to set permissions for accessing the serial port. you can add your user to the `dialout` group (e.g., `sudo usermod -ag dialout $user`).
*threading:* the reading operation in the example is blocking and may need to be run in a separate thread to avoid freezing your application.
*error handling:* proper error handling should be implemented in a production environment.

conclusion

this tutorial provi ...

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