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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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A class which can consume and produce dates in SQL Date format. Dates are
represented in SQL as yyyy
- Arrays (java.util)
This class contains various methods for manipulating arrays (such as sorting and
searching). This cl
- Collection (java.util)
Collection is the root of the collection hierarchy. It defines operations on
data collections and t
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A linear collection that supports element insertion and removal at both ends.
The name deque is shor
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
#acquire blocks if
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Defines methods that all servlets must implement. A servlet is a small Java
program that runs within
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