- Making http requests using okhttp
- addToBackStack (FragmentTransaction)
- getSystemService (Context)
- scheduleAtFixedRate (ScheduledExecutorService)
- FileOutputStream (java.io)
An output stream that writes bytes to a file. If the output file exists, it can
be replaced or appen
- System (java.lang)
Provides access to system-related information and resources including standard
input and output. Ena
- UnknownHostException (java.net)
Thrown when a hostname can not be resolved.
- JarFile (java.util.jar)
JarFile is used to read jar entries and their associated data from jar files.
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
- Filter (javax.servlet)
A filter is an object that performs filtering tasks on either the request to a
resource (a servlet o
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