- Running tasks concurrently on multiple threads
- addToBackStack (FragmentTransaction)
- getApplicationContext (Context)
- putExtra (Intent)
- IOException (java.io)
Signals a general, I/O-related error. Error details may be specified when
calling the constructor, a
- Socket (java.net)
Provides a client-side TCP socket.
- HashSet (java.util)
HashSet is an implementation of a Set. All optional operations (adding and
removing) are supported.
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
- Collectors (java.util.stream)
- FlowLayout (java.awt)
A flow layout arranges components in a left-to-right flow, much like lines of
text in a paragraph. F
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