- Making http requests using okhttp
- setRequestProperty (URLConnection)
- getSharedPreferences (Context)
- startActivity (Activity)
- File (java.io)
An "abstract" representation of a file system entity identified by a pathname.
The pathname may be a
- DateFormat (java.text)
Formats or parses dates and times.This class provides factories for obtaining
instances configured f
- ArrayList (java.util)
ArrayList is an implementation of List, backed by an array. All optional
operations including adding
- Map (java.util)
A Map is a data structure consisting of a set of keys and values in which each
key is mapped to a si
- ServletException (javax.servlet)
Defines a general exception a servlet can throw when it encounters difficulty.
- Logger (org.apache.log4j)
This is the central class in the log4j package. Most logging operations, except
configuration, are d
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