- Creating JSON documents from java classes using gson
- getExternalFilesDir (Context)
- orElseThrow (Optional)
Return the contained value, if present, otherwise throw an exception to be
created by the provided s
- addToBackStack (FragmentTransaction)
- SecureRandom (java.security)
This class generates cryptographically secure pseudo-random numbers. It is best
to invoke SecureRand
- Calendar (java.util)
Calendar is an abstract base class for converting between a Date object and a
set of integer fields
- Iterator (java.util)
An iterator over a sequence of objects, such as a collection.If a collection has
been changed since
- Locale (java.util)
Locale represents a language/country/variant combination. Locales are used to
alter the presentatio
- JarFile (java.util.jar)
JarFile is used to read jar entries and their associated data from jar files.
- Logger (org.apache.log4j)
This is the central class in the log4j package. Most logging operations, except
configuration, are d
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