- Reading from database using SQL prepared statement
- getApplicationContext (Context)
- getSharedPreferences (Context)
- orElseThrow (Optional)
Return the contained value, if present, otherwise throw an exception to be
created by the provided s
- InputStream (java.io)
A readable source of bytes.Most clients will use input streams that read data
from the file system (
- Connection (java.sql)
A connection represents a link from a Java application to a database. All SQL
statements and results
- HashSet (java.util)
HashSet is an implementation of a Set. All optional operations (adding and
removing) are supported.
- Executors (java.util.concurrent)
Factory and utility methods for Executor, ExecutorService,
ScheduledExecutorService, ThreadFactory,
- ReentrantLock (java.util.concurrent.locks)
A reentrant mutual exclusion Lock with the same basic behavior and semantics as
the implicit monitor
- HttpServletRequest (javax.servlet.http)
Extends the javax.servlet.ServletRequest interface to provide request
information for HTTP servlets.
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