We can get the url to invoke from UI as follows:

1. Login to https://portal.azure.com/
2. Click on App Services from left sidebar or the main page
3. Click on our app name
4. In the App's page click on the function name HttpTrigger-Java

5. Click on Get function URL. This will return the public URL for your function.

We can run the public URL from a browser specifying the required path parameter (similar to what we did with localhost).