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This class consists exclusively of static methods that operate on or return
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HashMap is an implementation of Map. All optional operations are supported.All
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A collection designed for holding elements prior to processing. Besides basic
java.util.Collection o
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This is the central class in the log4j package. Most logging operations, except
configuration, are d
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A border layout lays out a container, arranging and resizing its components to
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Defines the contract between a returned instance and the runtime when an
application needs to provid
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