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- getExternalFilesDir (Context)
- orElseThrow (Optional)
Return the contained value, if present, otherwise throw an exception to be
created by the provided s
- notifyDataSetChanged (ArrayAdapter)
- BufferedWriter (java.io)
Wraps an existing Writer and buffers the output. Expensive interaction with the
underlying reader is
- FileInputStream (java.io)
An input stream that reads bytes from a file.
File file = ...finally
if (in != null)
in.clos
- String (java.lang)
- TimerTask (java.util)
The TimerTask class represents a task to run at a specified time. The task may
be run once or repeat
- ExecutorService (java.util.concurrent)
An Executor that provides methods to manage termination and methods that can
produce a Future for tr
- Semaphore (java.util.concurrent)
A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
#acquire blocks if
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