- Running tasks concurrently on multiple threads
- addToBackStack (FragmentTransaction)
- getSupportFragmentManager (FragmentActivity)
- setRequestProperty (URLConnection)
- Connection (java.sql)
A connection represents a link from a Java application to a database. All SQL
statements and results
- Iterator (java.util)
An iterator over a sequence of objects, such as a collection.If a collection has
been changed since
- TreeSet (java.util)
TreeSet is an implementation of SortedSet. All optional operations (adding and
removing) are support
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
- Base64 (org.apache.commons.codec.binary)
Provides Base64 encoding and decoding as defined by RFC 2045.This class
implements section 6.8. Base
- FileUtils (org.apache.commons.io)
General file manipulation utilities. Facilities are provided in the following
areas: * writing to a
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