- Start an intent from android
- addToBackStack (FragmentTransaction)
- scheduleAtFixedRate (Timer)
- setContentView (Activity)
- SecureRandom (java.security)
This class generates cryptographically secure pseudo-random numbers. It is best
to invoke SecureRand
- DateFormat (java.text)
Formats or parses dates and times.This class provides factories for obtaining
instances configured f
- Date (java.util)
A specific moment in time, with millisecond precision. Values typically come
from System#currentTime
- Semaphore (java.util.concurrent)
A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
#acquire blocks if
- Manifest (java.util.jar)
The Manifest class is used to obtain attribute information for a JarFile and its
entries.
- Servlet (javax.servlet)
Defines methods that all servlets must implement. A servlet is a small Java
program that runs within
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