程序包 java.io

类 PipedOutputStream

java.lang.Object

java.io.OutputStream

java.io.PipedOutputStream

所有已实现的接口:

Closeable, Flushable, AutoCloseable

public class PipedOutputStream
extends OutputStream

A piped output stream can be connected to a piped input stream to create a communications pipe. The piped output stream is the sending end of the pipe. Typically, data is written to a PipedOutputStream object by one thread and data is read from the connected PipedInputStream by some other thread. Attempting to use both objects from a single thread is not recommended as it may deadlock the thread. The pipe is said to be broken if a thread that was reading data bytes from the connected piped input stream is no longer alive.

从以下版本开始:

JDK1.0

另请参阅:

PipedInputStream

构造器概要

构造器

构造器	说明
PipedOutputStream()	Creates a piped output stream that is not yet connected to a piped input stream.
PipedOutputStream(PipedInputStream snk)	Creates a piped output stream connected to the specified piped input stream.

方法概要

限定符和类型	方法	说明
void	close()	Closes this piped output stream and releases any system resources associated with this stream.
void	connect(PipedInputStream snk)	Connects this piped output stream to a receiver.
void	flush()	Flushes this output stream and forces any buffered output bytes to be written out.
void	write(byte[] b, int off, int len)	Writes len bytes from the specified byte array starting at offset off to this piped output stream.
void	write(int b)	Writes the specified byte to the piped output stream.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从类继承的方法 java.io.OutputStream

write

构造器详细资料

PipedOutputStream

public PipedOutputStream(PipedInputStream snk)
                  throws IOException

Creates a piped output stream connected to the specified piped input stream. Data bytes written to this stream will then be available as input from snk.

参数:

snk - The piped input stream to connect to.

抛出:

IOException - if an I/O error occurs.

PipedOutputStream

public PipedOutputStream()

Creates a piped output stream that is not yet connected to a piped input stream. It must be connected to a piped input stream, either by the receiver or the sender, before being used.

另请参阅:

PipedInputStream.connect(java.io.PipedOutputStream), connect(java.io.PipedInputStream)

方法详细资料

connect

public void connect(PipedInputStream snk)
             throws IOException

Connects this piped output stream to a receiver. If this object is already connected to some other piped input stream, an IOException is thrown.

If snk is an unconnected piped input stream and src is an unconnected piped output stream, they may be connected by either the call:

 src.connect(snk)

or the call:

 snk.connect(src)

The two calls have the same effect.

参数:

snk - the piped input stream to connect to.

抛出:

IOException - if an I/O error occurs.

write

public void write(int b)
           throws IOException

Writes the specified byte to the piped output stream.

Implements the write method of OutputStream.

指定者:

write 在类中 OutputStream

参数:

b - the byte to be written.

抛出:

IOException - if the pipe is broken, unconnected, closed, or if an I/O error occurs.

write

public void write(byte[] b,
                  int off,
                  int len)
           throws IOException

Writes len bytes from the specified byte array starting at offset off to this piped output stream. This method blocks until all the bytes are written to the output stream.

覆盖:

write 在类中 OutputStream

参数:

b - the data.

off - the start offset in the data.

len - the number of bytes to write.

抛出:

IOException - if the pipe is broken, unconnected, closed, or if an I/O error occurs.

flush

public void flush()
           throws IOException

Flushes this output stream and forces any buffered output bytes to be written out. This will notify any readers that bytes are waiting in the pipe.

指定者:

flush 在接口中 Flushable

覆盖:

flush 在类中 OutputStream

抛出:

IOException - if 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 bytes.

指定者:

close 在接口中 AutoCloseable

指定者:

close 在接口中 Closeable

覆盖:

close 在类中 OutputStream

抛出:

IOException - if an I/O error occurs.