How to check given domain name http or https in java?

Question

My problem

In my android application I get url input from user, like \"www.google.com\".

I want to find out for the given url whether to use

Answer 1

A domain name is a domain name, it has nothing to do with protocol. The domain is the WHERE, the protocol is the HOW.

The domain is the location you want to go, the protocol is how do you go there, by bus, by plane, by train or by boat. It makes no sense to ask 'I want to go to the store, how do I ask the store if I should go by train or by car?'

The reason this works in browsers is that the browser usually tries to connect using both http and https if no protocol is supplied.

If you know the URL, do this:

    public void decideProtocol(URL url) throws IOException {
            if ("https".equals(url.getProtocol())) { 
                // It is https
            } else if ("http".equals(url.getProtocol())) {
                // It is http
            }
    }