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ArrayList is an implementation of List, backed by an array. All optional
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HashSet is an implementation of a Set. All optional operations (adding and
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A collection designed for holding elements prior to processing. Besides basic
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A parser that parses a text string of primitive types and strings with the help
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The TimerTask class represents a task to run at a specified time. The task may
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General IO stream manipulation utilities. This class provides static utility
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