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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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ObjectMapper provides functionality for reading and writing JSON, either to and
from basic POJOs (Pl
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Produces concatenated messages in language-neutral way. New code should probably
use java.util.Forma
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A Properties object is a Hashtable where the keys and values must be Strings.
Each property can have
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
#acquire blocks if
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General IO stream manipulation utilities. This class provides static utility
methods for input/outpu
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A Java virtual machine.
A VirtualMachine represents a Java virtual machine to which this Java vir
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