- Making http requests using okhttp
- getSupportFragmentManager (FragmentActivity)
- addToBackStack (FragmentTransaction)
- runOnUiThread (Activity)
- InputStream (java.io)
A readable source of bytes.Most clients will use input streams that read data
from the file system (
- URLConnection (java.net)
A connection to a URL for reading or writing. For HTTP connections, see
HttpURLConnection for docume
- Selector (java.nio.channels)
A controller for the selection of SelectableChannel objects. Selectable channels
can be registered w
- Arrays (java.util)
This class contains various methods for manipulating arrays (such as sorting and
searching). This cl
- Scanner (java.util)
A parser that parses a text string of primitive types and strings with the help
of regular expressio
- Filter (javax.servlet)
A filter is an object that performs filtering tasks on either the request to a
resource (a servlet o
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