How to interface raspberry pi with java

[Amraresh]

Hai,
I am a beginner. I wanna do a project on IoT using raspberry pi. As per my project requirement, I wanna establish bidirectional data transfer between raspberry pi and java. I am going to use Python in raspberry pi. Please let me know how to achieve the same. Please check the attachment for clarity.

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[Heater]

I presume your Java is to be running on a server in the "cloud" or somewhere.

Why not just use HTTP requests from the Pi to that server for communications? A so called RESTfull API.

It's easy to make HTTP GET and POST requests to a webserver in Python. And you will already have a web server in place that can handle them.

Have a google around for RESTful API and you will find lots of discusion about it, examples, etc.