Querying and getting specific data from a website - Java

Querying and getting specific data from a website - Java

I'm learning basic programming in Java, and learning to create apps in
Android. My idea would connect to a specific website. The idea is twofold:
Query the website based on the information typed by the user in the app.
Get the specific data from that website to for further interactions in the
app.
I've looked at Oracle's basic lessons for connecting to a specific URL,
but I'm unsure of what the next step is. What should I be thinking about
next?
Thanks for any answers and advice!