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Java OutputStreamWriter

OutputStreamWriter is a class which is used to convert character stream to byte stream, the characters are encoded into byte using a specified charset. write() method calls the encoding converter which converts the character into bytes. The resulting bytes are then accumulated in a buffer before being written into the underlying output stream. The characters passed to write() methods are not buffered. We optimize the performance of OutputStreamWriter by using it with in a BufferedWriter so that to avoid frequent converter invocation.

Constructor

Constructor Description
OutputStreamWriter(OutputStream out) It creates an OutputStreamWriter that uses the default character encoding.
OutputStreamWriter(OutputStream out, Charset cs) It creates an OutputStreamWriter that uses the given charset.
OutputStreamWriter(OutputStream out, CharsetEncoder enc) It creates an OutputStreamWriter that uses the given charset encoder.
OutputStreamWriter(OutputStream out, String charsetName) It creates an OutputStreamWriter that uses the named charset.

Methods

Modifier and Type Method Description
void close() It closes the stream, flushing it first.
void flush() It flushes the stream.
String getEncoding() It returns the name of the character encoding being used by this stream.
void write(char[] cbuf, int off, int len) It writes a portion of an array of characters.
void write(int c) It writes a single character.
void write(String str, int off, int len) It writes a portion of a string.

Example

Output:

output.txt file will contains text  "Hello World"





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