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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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Calendar is an abstract base class for converting between a Date object and a
set of integer fields
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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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Breaks a string into tokens; new code should probably use String#split.>
// Legacy code:
StringTo
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A java.util.Queue that additionally supports operations that wait for the queue
to become non-empty
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An ExecutorService that executes each submitted task using one of possibly
several pooled threads, n
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An interface for the creation of Connection objects which represent a connection
to a database. This
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