java.io
Class PipedWriter
java.lang.Object
|
+--java.io.Writer
|
+--java.io.PipedWriter
- 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,
registerNatives,
toString,
wait,
wait,
wait |
sink
private PipedReader sink
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
.
- Parameters:
c
- the char
to be written.- Throws:
- IOException - if an I/O error occurs.
- Overrides:
- write in class Writer
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.
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.
- Parameters:
cbuf
- the data.off
- the start offset in the data.len
- the number of characters to write.- Throws:
- IOException - if an I/O error occurs.
- Overrides:
- write in class Writer
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.
- Throws:
- IOException - if an I/O error occurs.
- Overrides:
- flush in class Writer
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.
- Throws:
- IOException - if an I/O error occurs.
- Overrides:
- close in class Writer