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Class java.io.DataOutputStream

java.lang.Object
   |
   +----java.io.OutputStream
           |
           +----java.io.FilterOutputStream
                   |
                   +----java.io.DataOutputStream

public class DataOutputStream

extends FilterOutputStream

written

The number of bytes written so far.

DataOutputStream(OutputStream)

Creates a new DataOutputStream

align(int)

Aligns.

flush()

Flushes the stream.

size()

Returns number of bytes written.

write(int)

Writes a byte.

write(byte[], int, int)

Writes a sub array of bytes.

writeBoolean(boolean)

Writes a boolean.

writeByte(int)

Writes an 8 bit byte.

writeBytes(String)

Writes a string as a sequence of bytes.

writeChar(int)

Writes a 16 bit char.

writeChars(String)

Writes a string as a sequence of chars.

writeDouble(double)

Writes a 64 bit double.

writeFloat(float)

Writes a 32 bit float.

writeInt(int)

Writes a 32 bit int.

writeLong(long)

Writes a 64 bit long.

writeShort(int)

Writes a 16 bit short.

writeUTF(String)

Writes string in UTF format.

  protected int written

The number of bytes written so far.

  public DataOutputStream(OutputStream out)

Creates a new DataOutputStream

Parameters:

out - the output stream

  public synchronized void write(int b)

Writes a byte. Will block until the byte is actually written.

Throws: IOException

i/o error occurred

Overrides:

write in class FilterOutputStream

write

  public synchronized void write(byte b[],
                                 int off,
                                 int len)

Writes a sub array of bytes. To be efficient it should be overridden in a subclass.

Parameters:

b - the data to be written

off - the start offset in the data

len - the number of bytes that are written

Throws: IOException

i/o error occurred

Overrides:

write in class FilterOutputStream

flush

  public void flush()

Flushes the stream. This will write any buffered output bytes.

Throws: IOException

i/o error occurred

Overrides:

flush in class FilterOutputStream

writeBoolean

  public final void writeBoolean(boolean v)

Writes a boolean.

writeByte

  public final void writeByte(int v)

Writes an 8 bit byte.

writeShort

  public final void writeShort(int v)

Writes a 16 bit short.

writeChar

  public final void writeChar(int v)

Writes a 16 bit char.

writeInt

  public final void writeInt(int v)

Writes a 32 bit int.

writeLong

  public final void writeLong(long v)

Writes a 64 bit long.

writeFloat

  public final void writeFloat(float v)

Writes a 32 bit float.

writeDouble

  public final void writeDouble(double v)

Writes a 64 bit double.

writeBytes

  public final void writeBytes(String s)

Writes a string as a sequence of bytes.

writeChars

  public final void writeChars(String s)

Writes a string as a sequence of chars.

writeUTF

  public final void writeUTF(String str)

Writes string in UTF format.

size

  public final int size()

Returns number of bytes written.

Returns:

the number of bytes written sofar

align

  public final void align(int n)

Aligns. This is useful when data fields have to be aligned on a n byte boundary.

Parameters:

n - the number of bytes to align on

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