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An output stream that writes bytes to a file. If the output file exists, it can
be replaced or appen
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This class represents a server-side socket that waits for incoming client
connections. A ServerSocke
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Note: Do not use this class since it is obsolete. Please use the Map interface
for new implementatio
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A map that has its keys ordered. The sorting is according to either the natural
ordering of its keys
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Patterns are compiled regular expressions. In many cases, convenience methods
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