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Thrown when a hostname can not be resolved.
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This class contains various methods for manipulating arrays (such as sorting and
searching). This cl
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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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An ExecutorService that executes each submitted task using one of possibly
several pooled threads, n
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This is the central class in the log4j package. Most logging operations, except
configuration, are d
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