- Making http requests using okhttp
- startActivity (Activity)
- getExternalFilesDir (Context)
- getContentResolver (Context)
- InputStream (java.io)
A readable source of bytes.Most clients will use input streams that read data
from the file system (
- RandomAccessFile (java.io)
Allows reading from and writing to a file in a random-access manner. This is
different from the uni-
- Arrays (java.util)
This class contains various methods for manipulating arrays (such as sorting and
searching). This cl
- Enumeration (java.util)
A legacy iteration interface.New code should use Iterator instead. Iterator
replaces the enumeration
- ExecutorService (java.util.concurrent)
An Executor that provides methods to manage termination and methods that can
produce a Future for tr
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
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