- Running tasks concurrently on multiple threads
- onRequestPermissionsResult (Fragment)
- getSystemService (Context)
- getSharedPreferences (Context)
- PrintWriter (java.io)
Wraps either an existing OutputStream or an existing Writerand provides
convenience methods for prin
- Permission (java.security)
Legacy security code; do not use.
- DateFormat (java.text)
Formats or parses dates and times.This class provides factories for obtaining
instances configured f
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
- Graphics2D (java.awt)
This Graphics2D class extends the Graphics class to provide more sophisticated
control overgraphics
- GridBagLayout (java.awt)
The GridBagLayout class is a flexible layout manager that aligns components
vertically and horizonta
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