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An Internet Protocol (IP) address. This can be either an IPv4 address or an IPv6
address, and in pra
- Calendar (java.util)
Calendar is an abstract base class for converting between a Date object and a
set of integer fields
- SortedMap (java.util)
A map that has its keys ordered. The sorting is according to either the natural
ordering of its keys
- Callable (java.util.concurrent)
A task that returns a result and may throw an exception. Implementors define a
single method with no
- StringUtils (org.apache.commons.lang)
Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
- Logger (org.apache.log4j)
This is the central class in the log4j package. Most logging operations, except
configuration, are d
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