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- orElseThrow (Optional)
Return the contained value, if present, otherwise throw an exception to be
created by the provided s
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This SocketException may be thrown during socket creation or setting options,
and is the superclass
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KeyStore is responsible for maintaining cryptographic keys and their owners.
The type of the syste
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This class provides methods that return pseudo-random values.It is dangerous to
seed Random with the
- TreeSet (java.util)
TreeSet is an implementation of SortedSet. All optional operations (adding and
removing) are support
- Executor (java.util.concurrent)
An object that executes submitted Runnable tasks. This interface provides a way
of decoupling task s
- HttpServlet (javax.servlet.http)
Provides an abstract class to be subclassed to create an HTTP servlet suitable
for a Web site. A sub
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