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Represents a command that can be executed. Often used to run code in a different
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A charset is a named mapping between Unicode characters and byte sequences.
Every Charset can decode
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This class provides methods that return pseudo-random values.It is dangerous to
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Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
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Provides an abstract class to be subclassed to create an HTTP servlet suitable
for a Web site. A sub
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