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Return the contained value, if present, otherwise throw an exception to be
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A class for turning a byte stream into a character stream. Data read from the
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Wraps either an existing OutputStream or an existing Writerand provides
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This class represents a server-side socket that waits for incoming client
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A charset is a named mapping between Unicode characters and byte sequences.
Every Charset can decode
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HashMap is an implementation of Map. All optional operations are supported.All
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Defines methods that all servlets must implement. A servlet is a small Java
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