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Java Standard Edition (SE)

PipedOutputStream


compact1, compact2, compact3
java.io

Class PipedOutputStream

  • All Implemented Interfaces:
    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.
    Since:
    JDK1.0
    See Also:
    PipedInputStream
    • Constructor Detail

      • 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.
        Parameters:
        snk - The piped input stream to connect to.
        Throws:
        IOException - if an I/O error occurs.
    • Method Detail

      • 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.
        Parameters:
        snk - the piped input stream to connect to.
        Throws:
        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.

        Specified by:
        write in class OutputStream
        Parameters:
        b - the byte to be written.
        Throws:
        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.
        Overrides:
        write in class OutputStream
        Parameters:
        b - the data.
        off - the start offset in the data.
        len - the number of bytes to write.
        Throws:
        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.
        Specified by:
        flush in interface Flushable
        Overrides:
        flush in class OutputStream
        Throws:
        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.
        Specified by:
        close in interface Closeable
        Specified by:
        close in interface AutoCloseable
        Overrides:
        close in class OutputStream
        Throws:
        IOException - if an I/O error occurs.


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