java.lang.Object
java.io.OutputStream
java.io.FilterOutputStream
java.io.BufferedOutputStream
- All Implemented Interfaces:
- Closeable,- Flushable,- AutoCloseable
The class implements a buffered output stream. By setting up 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.
- Since:
- 1.0
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Field SummaryFieldsModifier and TypeFieldDescriptionprotected byte[]The internal buffer where data is stored.protected intThe number of valid bytes in the buffer.Fields declared in class java.io.FilterOutputStreamout
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Constructor SummaryConstructorsConstructorDescriptionCreates a new buffered output stream to write data to the specified underlying output stream.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.
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Method SummaryModifier and TypeMethodDescriptionvoidflush()Flushes this buffered output stream.voidwrite(byte[] b, int off, int len) Writeslenbytes from the specified byte array starting at offsetoffto this buffered output stream.voidwrite(int b) Writes the specified byte to this buffered output stream.Methods declared in class java.io.FilterOutputStreamclose, writeMethods declared in class java.io.OutputStreamnullOutputStream
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Field Details- 
bufprotected byte[] bufThe internal buffer where data is stored.
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countprotected int countThe number of valid bytes in the buffer. This value is always in the range0throughbuf.length; elementsbuf[0]throughbuf[count-1]contain valid byte data.
 
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Constructor Details- 
BufferedOutputStreamCreates a new buffered output stream to write data to the specified underlying output stream.- Parameters:
- out- the underlying output stream.
 
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BufferedOutputStreamCreates 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.
 
 
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Method Details- 
writeWrites the specified byte to this buffered output stream.- Overrides:
- writein class- FilterOutputStream
- Parameters:
- b- the byte to be written.
- Throws:
- IOException- if an I/O error occurs.
 
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writeWriteslenbytes from the specified byte array starting at offsetoffto 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:
- writein 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.
- IndexOutOfBoundsException- If- offis negative,- lenis negative, or- lenis greater than- b.length - off
- See Also:
 
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flushFlushes this buffered output stream. This forces any buffered output bytes to be written out to the underlying output stream.- Specified by:
- flushin interface- Flushable
- Overrides:
- flushin class- FilterOutputStream
- Throws:
- IOException- if an I/O error occurs.
- See Also:
 
 
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