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• java
• j2se
• 1.6
• java.io
• DataOutputStream

Methods

• DataOutputStreamtop

  public DataOutputStream(OutputStream out)
  Creates a new data output stream to write data to the specified underlying output stream. The counter written is set to zero.

  Parameters:

  @param out the underlying output stream, to be saved for later use.

  See:

  @see java.io.FilterOutputStream.out

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• flushtop

  public void flush() throws IOException
  Flushes this data output stream. This forces any buffered output bytes to be written out to the stream.

  The flush method of DataOutputStream calls the flush method of its underlying output stream.

  Exceptions:

  @exception IOException if an I/O error occurs.

  See:

  @see java.io.FilterOutputStream.out

  @see java.io.OutputStream.flush()

  Specified by:

  flush from Flushable

  Override hierarchy:

  flush from FilterOutputStream

  flush from OutputStream

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• sizetop

  public final int size()
  Returns the current value of the counter written, the number of bytes written to this data output stream so far. If the counter overflows, it will be wrapped to Integer.MAX_VALUE.

  Return:

  @return the value of the written field.

  See:

  @see java.io.DataOutputStream.written

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• writetop

  public synchronized void write(int b) throws IOException
  Writes the specified byte (the low eight bits of the argument b) to the underlying output stream. If no exception is thrown, the counter written is incremented by 1.

  Implements the write method of OutputStream.

  Parameters:

  @param b the byte to be written.

  Exceptions:

  @exception IOException if an I/O error occurs.

  See:

  @see java.io.FilterOutputStream.out

  Specified by:

  write from DataOutput

  Override hierarchy:

  write from FilterOutputStream

  write from OutputStream

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• writetop

  public synchronized void write(byte[] b, int off, int len) throws IOException
  Writes len bytes from the specified byte array starting at offset off to the underlying output stream. If no exception is thrown, the counter written is incremented by len.

  Parameters:

  @param b the data.

  @param off the start offset in the data.

  @param len the number of bytes to write.

  Exceptions:

  @exception IOException if an I/O error occurs.

  See:

  @see java.io.FilterOutputStream.out

  Specified by:

  write from DataOutput

  Override hierarchy:

  write from FilterOutputStream

  write from OutputStream

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• writeBooleantop

  public final void writeBoolean(boolean v) throws IOException
  Writes a boolean to the underlying output stream as a 1-byte value. The value true is written out as the value (byte)1; the value false is written out as the value (byte)0. If no exception is thrown, the counter written is incremented by 1.

  Parameters:

  @param v a boolean value to be written.

  Exceptions:

  @exception IOException if an I/O error occurs.

  See:

  @see java.io.FilterOutputStream.out

  Specified by:

  writeBoolean from DataOutput

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• writeBytetop

  public final void writeByte(int v) throws IOException
  Writes out a byte to the underlying output stream as a 1-byte value. If no exception is thrown, the counter written is incremented by 1.

  Parameters:

  @param v a byte value to be written.

  Exceptions:

  @exception IOException if an I/O error occurs.

  See:

  @see java.io.FilterOutputStream.out

  Specified by:

  writeByte from DataOutput

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• writeBytestop

  public final void writeBytes(String s) throws IOException
  Writes out the string to the underlying output stream as a sequence of bytes. Each character in the string is written out, in sequence, by discarding its high eight bits. If no exception is thrown, the counter written is incremented by the length of s.

  Parameters:

  @param s a string of bytes to be written.

  Exceptions:

  @exception IOException if an I/O error occurs.

  See:

  @see java.io.FilterOutputStream.out

  Specified by:

  writeBytes from DataOutput

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• writeChartop

  public final void writeChar(int v) throws IOException
  Writes a char to the underlying output stream as a 2-byte value, high byte first. If no exception is thrown, the counter written is incremented by 2.

  Parameters:

  @param v a char value to be written.

  Exceptions:

  @exception IOException if an I/O error occurs.

  See:

  @see java.io.FilterOutputStream.out

  Specified by:

  writeChar from DataOutput

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• writeCharstop

  public final void writeChars(String s) throws IOException
  Writes a string to the underlying output stream as a sequence of characters. Each character is written to the data output stream as if by the writeChar method. If no exception is thrown, the counter written is incremented by twice the length of s.

  Parameters:

  @param s a String value to be written.

  Exceptions:

  @exception IOException if an I/O error occurs.

  See:

  @see java.io.DataOutputStream.writeChar(int)

  @see java.io.FilterOutputStream.out

  Specified by:

  writeChars from DataOutput

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• writeDoubletop

  public final void writeDouble(double v) throws IOException
  Converts the double argument to a long using the doubleToLongBits method in class Double, and then writes that long value to the underlying output stream as an 8-byte quantity, high byte first. If no exception is thrown, the counter written is incremented by 8.

  Parameters:

  @param v a double value to be written.

  Exceptions:

  @exception IOException if an I/O error occurs.

  See:

  @see java.io.FilterOutputStream.out

  @see Double.doubleToLongBits(double)

  Specified by:

  writeDouble from DataOutput

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• writeFloattop

  public final void writeFloat(float v) throws IOException
  Converts the float argument to an int using the floatToIntBits method in class Float, and then writes that int value to the underlying output stream as a 4-byte quantity, high byte first. If no exception is thrown, the counter written is incremented by 4.

  Parameters:

  @param v a float value to be written.

  Exceptions:

  @exception IOException if an I/O error occurs.

  See:

  @see java.io.FilterOutputStream.out

  @see Float.floatToIntBits(float)

  Specified by:

  writeFloat from DataOutput

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• writeInttop

  public final void writeInt(int v) throws IOException
  Writes an int to the underlying output stream as four bytes, high byte first. If no exception is thrown, the counter written is incremented by 4.

  Parameters:

  @param v an int to be written.

  Exceptions:

  @exception IOException if an I/O error occurs.

  See:

  @see java.io.FilterOutputStream.out

  Specified by:

  writeInt from DataOutput

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• writeLongtop

  public final void writeLong(long v) throws IOException
  Writes a long to the underlying output stream as eight bytes, high byte first. In no exception is thrown, the counter written is incremented by 8.

  Parameters:

  @param v a long to be written.

  Exceptions:

  @exception IOException if an I/O error occurs.

  See:

  @see java.io.FilterOutputStream.out

  Specified by:

  writeLong from DataOutput

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• writeShorttop

  public final void writeShort(int v) throws IOException
  Writes a short to the underlying output stream as two bytes, high byte first. If no exception is thrown, the counter written is incremented by 2.

  Parameters:

  @param v a short to be written.

  Exceptions:

  @exception IOException if an I/O error occurs.

  See:

  @see java.io.FilterOutputStream.out

  Specified by:

  writeShort from DataOutput

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• writeUTFtop

  public final void writeUTF(String str) throws IOException
  Writes a string to the underlying output stream using modified UTF-8 encoding in a machine-independent manner.

  First, two bytes are written to the output stream as if by the writeShort method giving the number of bytes to follow. This value is the number of bytes actually written out, not the length of the string. Following the length, each character of the string is output, in sequence, using the modified UTF-8 encoding for the character. If no exception is thrown, the counter written is incremented by the total number of bytes written to the output stream. This will be at least two plus the length of str, and at most two plus thrice the length of str.

  Parameters:

  @param str a string to be written.

  Exceptions:

  @exception IOException if an I/O error occurs.

  Specified by:

  writeUTF from DataOutput

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