- Creating JSON documents from java classes using gson
- getSupportFragmentManager (FragmentActivity)
- getSharedPreferences (Context)
- setContentView (Activity)
- InputStream (java.io)
A readable source of bytes.Most clients will use input streams that read data
from the file system (
- Date (java.util)
A specific moment in time, with millisecond precision. Values typically come
from System#currentTime
- GregorianCalendar (java.util)
GregorianCalendar is a concrete subclass of Calendarand provides the standard
calendar used by most
- HashMap (java.util)
HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
- LinkedHashMap (java.util)
LinkedHashMap is an implementation of Map that guarantees iteration order. All
optional operations a
- Executors (java.util.concurrent)
Factory and utility methods for Executor, ExecutorService,
ScheduledExecutorService, ThreadFactory,
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