public class OutputStreamWriter extends Writer
OutputStreamWriter contains a buffer
of bytes to be written to target stream and converts these into characters as
needed. The buffer size is 8K.InputStreamReader| Constructor and Description |
|---|
OutputStreamWriter(OutputStream out)
Constructs a new OutputStreamWriter using
out as the target
stream to write converted characters to. |
OutputStreamWriter(OutputStream out,
Charset cs)
Constructs a new OutputStreamWriter using
out as the target
stream to write converted characters to and cs as the character
encoding. |
OutputStreamWriter(OutputStream out,
CharsetEncoder charsetEncoder)
Constructs a new OutputStreamWriter using
out as the target
stream to write converted characters to and charsetEncoder as the character
encoder. |
OutputStreamWriter(OutputStream out,
String charsetName)
Constructs a new OutputStreamWriter using
out as the target
stream to write converted characters to and charsetName as the character
encoding. |
| Modifier and Type | Method and Description |
|---|---|
void |
close()
Closes this writer.
|
void |
flush()
Flushes this writer.
|
String |
getEncoding()
Returns the historical name of the encoding used by this writer to convert characters to
bytes, or null if this writer has been closed.
|
void |
write(char[] buffer,
int offset,
int count)
Writes
count characters starting at offset in buf
to this writer. |
void |
write(int oneChar)
Writes the character
oneChar to this writer. |
void |
write(String str,
int offset,
int count)
Writes
count characters starting at offset in str
to this writer. |
public OutputStreamWriter(OutputStream out)
out as the target
stream to write converted characters to. The default character encoding
is used.out - the non-null target stream to write converted bytes to.public OutputStreamWriter(OutputStream out, String charsetName) throws UnsupportedEncodingException
out as the target
stream to write converted characters to and charsetName as the character
encoding. If the encoding cannot be found, an
UnsupportedEncodingException error is thrown.out - the target stream to write converted bytes to.charsetName - the string describing the desired character encoding.NullPointerException - if charsetName is null.UnsupportedEncodingException - if the encoding specified by charsetName cannot be found.public OutputStreamWriter(OutputStream out, Charset cs)
out as the target
stream to write converted characters to and cs as the character
encoding.out - the target stream to write converted bytes to.cs - the Charset that specifies the character encoding.public OutputStreamWriter(OutputStream out, CharsetEncoder charsetEncoder)
out as the target
stream to write converted characters to and charsetEncoder as the character
encoder.out - the target stream to write converted bytes to.charsetEncoder - the character encoder used for character conversion.public void close()
throws IOException
Only the first invocation of this method has any effect. Subsequent calls do nothing.
close in interface Closeableclose in interface AutoCloseableclose in class WriterIOException - if an error occurs while closing this writer.public void flush()
throws IOException
flush in interface Flushableflush in class WriterIOException - if an error occurs while flushing this writer.public String getEncoding()
public void write(char[] buffer,
int offset,
int count)
throws IOException
count characters starting at offset in buf
to this writer. The characters are immediately converted to bytes by the
character converter and stored in a local buffer. If the buffer gets full
as a result of the conversion, this writer is flushed.write in class Writerbuffer - the array containing characters to write.offset - the index of the first character in buf to write.count - the maximum number of characters to write.IndexOutOfBoundsException - if offset < 0 or count < 0, or if
offset + count is greater than the size of
buf.IOException - if this writer has already been closed or another I/O error
occurs.public void write(int oneChar)
throws IOException
oneChar to this writer. The lowest two bytes
of the integer oneChar are immediately converted to bytes by the
character converter and stored in a local buffer. If the buffer gets full
by converting this character, this writer is flushed.write in class WriteroneChar - the character to write.IOException - if this writer is closed or another I/O error occurs.public void write(String str, int offset, int count) throws IOException
count characters starting at offset in str
to this writer. The characters are immediately converted to bytes by the
character converter and stored in a local buffer. If the buffer gets full
as a result of the conversion, this writer is flushed.write in class Writerstr - the string containing characters to write.offset - the start position in str for retrieving characters.count - the maximum number of characters to write.IOException - if this writer has already been closed or another I/O error
occurs.IndexOutOfBoundsException - if offset < 0 or count < 0, or if
offset + count is bigger than the length of
str.