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A charset is a named mapping between Unicode characters and byte sequences.
Every Charset can decode
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Calendar is an abstract base class for converting between a Date object and a
set of integer fields
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A parser that parses a text string of primitive types and strings with the help
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A plug-in replacement for JDK1.5 java.util.concurrent.ConcurrentHashMap. This
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Extends the javax.servlet.ServletRequest interface to provide request
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