How can I send Arduino sensors data to java application?

Question

my final year project is to do an Arduino watch that has heart rate and body temperature sensors and also a location tracking module. I need to send all the watch data to my java app but I don't how do I need to send it to a database first and then use it? and how can i do that. I'm using arduino uno and i want to send the data to a database on a server.

I'm using android studio and coding with java

please help :(

• chrisl: To what database do you want to send the data? Where does the database run? How is the Arduino Uno connected to the system running the database?
• user87358: I asked my teacher and she told me I have to read the data and send it to the server and the server will store it in a database and then display it in the application
• user87358: i don't know how to work with Arduino it is my first time and i just want to know how i will receive the data to display it in the app
• chrisl: Then you first need to think about how to contact your server, so you need a network connection. Do you need to use an Arduino Uno? Do you have a wifi network available? Or do you need a mobile data connection over LTE? Have you done research about these things?

Answer 1

To send the data from the Arduino, you just need to do this:

Serial.println(the_data);

But then you have to manage some communication link between the Arduino and whatever is going to collect the data. Typical choices are the USB link or a Bluetooth module. Then, whatever you do with this data (send to an Android phone, a Java app, a server, a database, whatever...) is up to you, and is not an Arduino question.