What are all the ways to read data from a webpage in android

Question

I want to access data from the web page.
In an android app , i am gonna populate it.

I heard about JSON-PARSING to fetch values, but the data source there mentioned is in JSONOBJECT format,
how is storing and populating there in JSONOBJECT and JSON array format ?

Is ther any alternate way to fetch values directly without converting into JSON format.