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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 class represents a server-side socket that waits for incoming client
connections. A ServerSocke
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Note: Do not use this class since it is obsolete. Please use the Map interface
for new implementatio
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GregorianCalendar is a concrete subclass of Calendarand provides the standard
calendar used by most
- Properties (java.util)
A Properties object is a Hashtable where the keys and values must be Strings.
Each property can have
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
- Rectangle (java.awt)
A Rectangle specifies an area in a coordinate space that is enclosed by the
Rectangle object's top-
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