- Making http post requests using okhttp
- findViewById (Activity)
- putExtra (Intent)
- getContentResolver (Context)
- SecureRandom (java.security)
This class generates cryptographically secure pseudo-random numbers. It is best
to invoke SecureRand
- Collections (java.util)
This class consists exclusively of static methods that operate on or return
collections. It contains
- Date (java.util)
A specific moment in time, with millisecond precision. Values typically come
from System#currentTime
- ServletException (javax.servlet)
Defines a general exception a servlet can throw when it encounters difficulty.
- HttpServletRequest (javax.servlet.http)
Extends the javax.servlet.ServletRequest interface to provide request
information for HTTP servlets.
- BufferedImage (java.awt.image)
The BufferedImage subclass describes an java.awt.Image with an accessible buffer
of image data. All
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