- All Implemented Interfaces:
- Closeable,- Flushable,- Appendable,- AutoCloseable
- Direct Known Subclasses:
- FileWriter
charset.  The charset that it uses
 may be specified by name or may be given explicitly, or the
 default charset may be accepted.
 Each invocation of a write() method causes the encoding converter to be invoked on the given character(s). The resulting bytes are accumulated in a buffer before being written to the underlying output stream. Note that the characters passed to the write() methods are not buffered.
For top efficiency, consider wrapping an OutputStreamWriter within a BufferedWriter so as to avoid frequent converter invocations. For example:
    Writer out = new BufferedWriter(new OutputStreamWriter(anOutputStream));
 A surrogate pair is a character represented by a sequence of two
 char values: A high surrogate in the range '\uD800' to
 '\uDBFF' followed by a low surrogate in the range '\uDC00' to
 '\uDFFF'.
 
A malformed surrogate element is a high surrogate that is not followed by a low surrogate or a low surrogate that is not preceded by a high surrogate.
This class always replaces malformed surrogate elements and unmappable character sequences with the charset's default substitution sequence. The CharsetEncoder class should be used when more control over the encoding process is required.
- Since:
- 1.1
- See Also:
- 
Field Summary
- 
Constructor SummaryConstructorsConstructorDescriptionCreates an OutputStreamWriter that uses the default character encoding, or whereoutis aPrintStream, the charset used by the print stream.OutputStreamWriter(OutputStream out, String charsetName) Creates an OutputStreamWriter that uses the named charset.OutputStreamWriter(OutputStream out, Charset cs) Creates an OutputStreamWriter that uses the given charset.OutputStreamWriter(OutputStream out, CharsetEncoder enc) Creates an OutputStreamWriter that uses the given charset encoder.
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Method SummaryModifier and TypeMethodDescriptionvoidclose()Closes the stream, flushing it first.voidflush()Flushes the stream.Returns the name of the character encoding being used by this stream.voidwrite(char[] cbuf, int off, int len) Writes a portion of an array of characters.voidwrite(int c) Writes a single character.voidWrites a portion of a string.
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Constructor Details- 
OutputStreamWriterCreates an OutputStreamWriter that uses the named charset.- Parameters:
- out- An OutputStream
- charsetName- The name of a supported- charset
- Throws:
- UnsupportedEncodingException- If the named encoding is not supported
 
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OutputStreamWriterCreates an OutputStreamWriter that uses the default character encoding, or whereoutis aPrintStream, the charset used by the print stream.- Parameters:
- out- An OutputStream
- See Also:
 
- 
OutputStreamWriterCreates an OutputStreamWriter that uses the given charset.- Parameters:
- out- An OutputStream
- cs- A charset
- Since:
- 1.4
 
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OutputStreamWriterCreates an OutputStreamWriter that uses the given charset encoder.- Parameters:
- out- An OutputStream
- enc- A charset encoder
- Since:
- 1.4
 
 
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Method Details- 
getEncodingReturns the name of the character encoding being used by this stream.If the encoding has an historical name then that name is returned; otherwise the encoding's canonical name is returned. If this instance was created with the OutputStreamWriter(OutputStream, String)constructor then the returned name, being unique for the encoding, may differ from the name passed to the constructor. This method may returnnullif the stream has been closed.- Returns:
- The historical name of this encoding, or possibly
         nullif the stream has been closed
- See Also:
 
- 
writeWrites a single character.- Overrides:
- writein class- Writer
- Parameters:
- c- int specifying a character to be written
- Throws:
- IOException- If an I/O error occurs
 
- 
writeWrites a portion of an array of characters.- Specified by:
- writein class- Writer
- Parameters:
- cbuf- Buffer of characters
- off- Offset from which to start writing characters
- len- Number of characters to write
- Throws:
- IndexOutOfBoundsException- If- offis negative, or- lenis negative, or- off + lenis negative or greater than the length of the given array
- IOException- If an I/O error occurs
 
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writeWrites a portion of a string.- Overrides:
- writein class- Writer
- Parameters:
- str- A String
- off- Offset from which to start writing characters
- len- Number of characters to write
- Throws:
- IndexOutOfBoundsException- If- offis negative, or- lenis negative, or- off + lenis negative or greater than the length of the given string
- IOException- If an I/O error occurs
 
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flushFlushes the stream.- Specified by:
- flushin interface- Flushable
- Specified by:
- flushin class- Writer
- Throws:
- IOException- If an I/O error occurs
 
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closeDescription copied from class:WriterCloses the stream, flushing it first. Once the stream has been closed, further write() or flush() invocations will cause an IOException to be thrown. Closing a previously closed stream has no effect.- Specified by:
- closein interface- AutoCloseable
- Specified by:
- closein interface- Closeable
- Specified by:
- closein class- Writer
- Throws:
- IOException- If an I/O error occurs
 
 
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