- Making http requests using okhttp
- getSystemService (Context)
- putExtra (Intent)
- setRequestProperty (URLConnection)
- InputStream (java.io)
A readable source of bytes.Most clients will use input streams that read data
from the file system (
- ServerSocket (java.net)
This class represents a server-side socket that waits for incoming client
connections. A ServerSocke
- Timestamp (java.sql)
A Java representation of the SQL TIMESTAMP type. It provides the capability of
representing the SQL
- Calendar (java.util)
Calendar is an abstract base class for converting between a Date object and a
set of integer fields
- Executors (java.util.concurrent)
Factory and utility methods for Executor, ExecutorService,
ScheduledExecutorService, ThreadFactory,
- ServletException (javax.servlet)
Defines a general exception a servlet can throw when it encounters difficulty.
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