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java.io
Class PipedWriter
java.lang.Object
java.io.Writer
java.io.PipedWriter
-
All Implemented Interfaces:
-
Closeable
,
Flushable
,
Appendable
-
public class PipedWriter
- extends Writer
Piped character-output streams.
-
Since:
-
JDK1.1
Constructor Summary
|
PipedWriter
()
Creates a piped writer that is not yet connected to a piped reader. |
PipedWriter
(
PipedReader
snk)
Creates a piped writer connected to the specified piped reader. |
Method Summary
|
void |
close
()
Closes this piped output stream and releases any system resources associated with this stream. |
void |
connect
(
PipedReader
snk)
Connects this piped writer to a receiver. |
void |
flush
()
Flushes this output stream and forces any buffered output characters to be written out. |
void |
write
(char[] cbuf, int off, int len)
Writes len characters from the specified character array starting at offset off to this piped output stream. |
void |
write
(int c)
Writes the specified char to the piped output stream. |
Methods inherited from class java.lang.
Object
|
clone
,
equals
,
finalize
,
getClass
,
hashCode
,
notify
,
notifyAll
,
toString
,
wait
,
wait
,
wait
|
PipedWriter
public PipedWriter(PipedReader snk)
throws IOException
-
Creates a piped writer connected to the specified piped reader. Data characters written to this stream will then be available as input from snk.
-
Parameters:
-
snk - The piped reader to connect to.
-
Throws:
-
IOException
- if an I/O error occurs.
PipedWriter
public PipedWriter()
-
Creates a piped writer that is not yet connected to a piped reader. It must be connected to a piped reader, either by the receiver or the sender, before being used.
-
See Also:
-
PipedReader.connect(java.io.PipedWriter)
,
connect(java.io.PipedReader)
connect
public void connect(PipedReader snk)
throws IOException
-
Connects this piped writer to a receiver. If this object is already connected to some other piped reader, an IOException is thrown.
If snk is an unconnected piped reader and src is an unconnected piped writer, they may be connected by either the call:
src.connect(snk)
or the call:
snk.connect(src)
The two calls have the same effect.
-
-
Parameters:
-
snk - the piped reader to connect to.
-
Throws:
-
IOException
- if an I/O error occurs.
write
public void write(int c)
throws IOException
-
Writes the specified char to the piped output stream. If a thread was reading data characters from the connected piped input stream, but the thread is no longer alive, then an IOException is thrown.
Implements the write method of Writer.
-
-
Overrides:
-
write
in class
Writer
-
-
Parameters:
-
c - the char to be written.
-
Throws:
-
IOException
- if
the pipe is
broken
,
unconnected
, closed or
an I/O error occurs.
write
public void write(char[] cbuf,
int off,
int len)
throws IOException
-
Writes len characters from the specified character array starting at offset off to this piped output stream.
This method blocks until all the characters are written to the output stream.
If a thread was reading data characters from the connected piped input stream, but the thread is no longer alive, then an IOException is thrown.
-
-
Specified by:
-
write
in class
Writer
-
-
Parameters:
-
cbuf - the data.
-
off - the start offset in the data.
-
len - the number of characters to write.
-
Throws:
-
IOException
- if
the pipe is
broken
,
unconnected
, closed or
an I/O error occurs.
flush
public void flush()
throws IOException
-
Flushes this output stream and forces any buffered output characters to be written out. This will notify any readers that characters are waiting in the pipe.
-
-
Specified by:
-
flush
in interface
Flushable
-
Specified by:
-
flush
in class
Writer
-
-
Throws:
-
IOException
- if
the pipe is closed, or
an I/O error occurs.
close
public void close()
throws IOException
-
Closes this piped output stream and releases any system resources associated with this stream. This stream may no longer be used for writing characters.
-
-
Specified by:
-
close
in interface
Closeable
-
Specified by:
-
close
in class
Writer
-
-
Throws:
-
IOException
- if an I/O error occurs.