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- orElseThrow (Optional)
Return the contained value, if present, otherwise throw an exception to be
created by the provided s
- GridLayout (java.awt)
The GridLayout class is a layout manager that lays out a container's components
in a rectangular gri
- InetAddress (java.net)
An Internet Protocol (IP) address. This can be either an IPv4 address or an IPv6
address, and in pra
- ServerSocket (java.net)
This class represents a server-side socket that waits for incoming client
connections. A ServerSocke
- HashMap (java.util)
HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
- Callable (java.util.concurrent)
A task that returns a result and may throw an exception. Implementors define a
single method with no
- Collectors (java.util.stream)
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