- Running tasks concurrently on multiple threads
- addToBackStack (FragmentTransaction)
- getSystemService (Context)
- startActivity (Activity)
- File (java.io)
An "abstract" representation of a file system entity identified by a pathname.
The pathname may be a
- IOException (java.io)
Signals a general, I/O-related error. Error details may be specified when
calling the constructor, a
- Handler (java.util.logging)
A Handler object accepts a logging request and exports the desired messages to a
target, for example
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
- Logger (org.slf4j)
The org.slf4j.Logger interface is the main user entry point of SLF4J API. It is
expected that loggin
- Graphics2D (java.awt)
This Graphics2D class extends the Graphics class to provide more sophisticated
control overgraphics
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