How to determine the location on wi-fi?

Question

Java

the address and location of the wi-fi router is known. How can I make it so that when I connect to the wifi of this router, I get a message that I am at this address. I'm interested in the scheme for implementing such an idea for my project. I'm writing an application for android.

Answer 1

Network SSID?
Although it may change.
You can grab the MAC address of the router, it changes less often.

Answer 2

Everything is very simple
https://developer.android.com/reference/android/ne...
DB: Address<->MAC of the router