- Reading from database using SQL prepared statement
- getSystemService (Context)
- scheduleAtFixedRate (ScheduledExecutorService)
- setRequestProperty (URLConnection)
- Runnable (java.lang)
Represents a command that can be executed. Often used to run code in a different
Thread.
- UnknownHostException (java.net)
Thrown when a hostname can not be resolved.
- Deque (java.util)
A linear collection that supports element insertion and removal at both ends.
The name deque is shor
- HashMap (java.util)
HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
- Cipher (javax.crypto)
This class provides access to implementations of cryptographic ciphers for
encryption and decryption
- Servlet (javax.servlet)
Defines methods that all servlets must implement. A servlet is a small Java
program that runs within
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