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§2.2 Class BufferedOutputStream

public  class  java.io.BufferedOutputStream
    extends  java.io.FilterOutputStream  (I-§2.12)
{
        // Fields
    protected byte buf[];	§2.2.1
    protected int count;	§2.2.2

        // Constructors
    public BufferedOutputStream(OutputStream  out);	§2.2.3
    public BufferedOutputStream(OutputStream  out, int size);	§2.2.4

        // Methods
    public void flush();	§2.2.5
    public void write(byte  b[], int  off, int  len);	§2.2.6
    public void write(int  b);	§2.2.7
}

The class implements a buffered output stream. By setting up a such an output stream, an application can write bytes to the underlying output stream without necessarily causing a call to the underlying system for each byte written. The data is written into a buffer, and then written to the underlying stream if the buffer reaches its capacity, the buffer output stream is closed, or the buffer output stream is explicity flushed.

buf

protected byte buf[]

The buffer where data is stored.

count

protected int count

The number of valid bytes in the buffer.

BufferedOutputStream

public BufferedOutputStream(OutputStream  out)

Creates a new buffered output stream to write data to the specified underlying output stream with a default 512-byte buffer size.

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

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 (I-§2.12.1).

Throws: IOException (I-§2.29); If an I/O error occurs.
Overrides:: flush in class FilterOutputStream (I-§2.12.4).

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.

Parameters:: b -the data; off -the start offset in the data; len -the number of bytes to write
Throws: IOException (I-§2.29); If an I/O error occurs.
Overrides:: write in class FilterOutputStream (I-§2.12.6).

write

public void write(int  b)

throws IOException

Writes the specified byte to this buffered output stream.

Parameters:: b -the byte to be written
Throws: IOException (I-§2.29); If an I/O error occurs.
Overrides:: write in class FilterOutputStream (I-§2.12.7).

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