- Creating JSON documents from java classes using gson
- onCreateOptionsMenu (Activity)
- getSupportFragmentManager (FragmentActivity)
- findViewById (Activity)
- HttpURLConnection (java.net)
An URLConnection for HTTP (RFC 2616 [http://tools.ietf.org/html/rfc2616]) used
to send and receive d
- MessageDigest (java.security)
Uses a one-way hash function to turn an arbitrary number of bytes into a
fixed-length byte sequence.
- Date (java.sql)
A class which can consume and produce dates in SQL Date format. Dates are
represented in SQL as yyyy
- Date (java.util)
A specific moment in time, with millisecond precision. Values typically come
from System#currentTime
- TreeSet (java.util)
TreeSet is an implementation of SortedSet. All optional operations (adding and
removing) are support
- Collectors (java.util.stream)
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