Java compact1, compact2, compact3 java.io Class BufferedOutputStream（JDK8）

Field Detail

• buf

  protected byte[] buf

  The internal buffer where data is stored.

• count

  protected int count

  The number of valid bytes in the buffer. This value is always in the range 0 through buf.length; elements buf[0] through buf[count-1] contain valid byte data.

Constructor Detail

• BufferedOutputStream

  public BufferedOutputStream(OutputStream out)

  Creates a new buffered output stream to write data to the specified underlying output stream.

  Parameters:

  out - the underlying output stream.

• BufferedOutputStream

  public BufferedOutputStream(OutputStream out,
                              int size)

  Creates a new buffered output stream to write data to the specified underlying output stream with the specified buffer size.

  Parameters:

  out - the underlying output stream.

  size - the buffer size.

  Throws:

  IllegalArgumentException - if size <= 0.

Method Detail

• write

  public void write(int b)
             throws IOException

  Writes the specified byte to this buffered output stream.

  Overrides:

  write in class FilterOutputStream

  Parameters:

  b - the byte to be written.

  Throws:

  IOException - 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 buffered output stream.

  Ordinarily this method stores bytes from the given array into this stream's buffer, flushing the buffer to the underlying output stream as needed. If the requested length is at least as large as this stream's buffer, however, then this method will flush the buffer and write the bytes directly to the underlying output stream. Thus redundant BufferedOutputStreams will not copy data unnecessarily.

  Overrides:

  write in class FilterOutputStream

  Parameters:

  b - the data.

  off - the start offset in the data.

  len - the number of bytes to write.

  Throws:

  IOException - if an I/O error occurs.

  See Also:

  FilterOutputStream.write(int)

• flush

  public void flush()
             throws IOException

  Flushes this buffered output stream. This forces any buffered output bytes to be written out to the underlying output stream.

  Specified by:

  flush in interface Flushable

  Overrides:

  flush in class FilterOutputStream

  Throws:

  IOException - if an I/O error occurs.

  See Also:

  FilterOutputStream.out