- Making http requests using okhttp
- orElseThrow (Optional)
Return the contained value, if present, otherwise throw an exception to be
created by the provided s
- getResourceAsStream (ClassLoader)
- scheduleAtFixedRate (ScheduledExecutorService)
- 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.
- ReentrantLock (java.util.concurrent.locks)
A reentrant mutual exclusion Lock with the same basic behavior and semantics as
the implicit monitor
- ServletException (javax.servlet)
Defines a general exception a servlet can throw when it encounters difficulty.
- Notification (javax.management)
- Reference (javax.naming)
- Top 12 Jupyter Notebook extensions