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Represents a command that can be executed. Often used to run code in a different
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A plug-in replacement for JDK1.5 java.util.Hashtable. This version is based on
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A Properties object is a Hashtable where the keys and values must be Strings.
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TreeSet is an implementation of SortedSet. All optional operations (adding and
removing) are support
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A task that returns a result and may throw an exception. Implementors define a
single method with no
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General IO stream manipulation utilities. This class provides static utility
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