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Return the contained value, if present, otherwise throw an exception to be
created by the provided s
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Stack is a Last-In/First-Out(LIFO) data structure which represents a stack of
objects. It enables u
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TreeSet is an implementation of SortedSet. All optional operations (adding and
removing) are support
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A plug-in replacement for JDK1.5 java.util.concurrent.ConcurrentHashMap. This
version is based on or
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
#acquire blocks if
- Stream (java.util.stream)
A sequence of elements supporting sequential and parallel aggregate operations.
The following exampl
- Logger (org.apache.log4j)
This is the central class in the log4j package. Most logging operations, except
configuration, are d
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