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Allows reading from and writing to a file in a random-access manner. This is
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Represents a command that can be executed. Often used to run code in a different
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
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Provides an abstract class to be subclassed to create an HTTP servlet suitable
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This is the central class in the log4j package. Most logging operations, except
configuration, are d
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