void |
writeUTF(String s)
Writes two bytes of length information to the output stream in
network byte order, followed by the
Methods inherited from interface javax.imageio.stream.ImageInputStream |
close, flush, getBitOffset, getByteOrder, getFlushedPosition, getStreamPosition, isCached, isCachedFile, isCachedMemory, length, mark, read, read, read, readBit, readBits, readBoolean, readByte, readBytes, readChar, readDouble, readFloat, readFully, readFully, readFully, readFully, readFully, readFully, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedInt, readUnsignedShort, readUTF, reset, seek, setBitOffset, setByteOrder, skipBytes, skipBytes |
write
void write(int b)
throws IOException
- Writes a single byte to the stream at the current position.
The 24 high-order bits of
b are ignored.
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write. Implementers can use the
flushBits
method of ImageOutputStreamImpl to guarantee this.
- Specified by:
write in interface DataOutput
- Parameters:
b - an int whose lower 8 bits are to be
written.
- Throws:
IOException - if an I/O error occurs.
write
void write(byte[] b)
throws IOException
- Writes a sequence of bytes to the stream at the current
position. If
b.length is 0, nothing is written.
The byte b[0] is written first, then the byte
b[1] , and so on.
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
- Specified by:
write in interface DataOutput
- Parameters:
b - an array of byte s to be written.
- Throws:
NullPointerException - if b is
null .
IOException - if an I/O error occurs.
write
void write(byte[] b,
int off,
int len)
throws IOException
- Writes a sequence of bytes to the stream at the current
position. If
len is 0, nothing is written.
The byte b[off] is written first, then the byte
b[off + 1] , and so on.
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write. Implementers can use the
flushBits
method of ImageOutputStreamImpl to guarantee this.
- Specified by:
write in interface DataOutput
- Parameters:
b - an array of byte s to be written.off - the start offset in the data.len - the number of byte s to write.
- Throws:
IndexOutOfBoundsException - if off is
negative, len is negative, or off +
len is greater than b.length .
NullPointerException - if b is
null .
IOException - if an I/O error occurs.
writeBoolean
void writeBoolean(boolean v)
throws IOException
- Writes a
boolean value to the stream. If
v is true, the value (byte)1 is
written; if v is false, the value
(byte)0 is written.
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
- Specified by:
writeBoolean in interface DataOutput
- Parameters:
v - the boolean to be written.
- Throws:
IOException - if an I/O error occurs.
writeByte
void writeByte(int v)
throws IOException
- Writes the 8 low-order bits of
v to the
stream. The 24 high-order bits of v are ignored.
(This means that writeByte does exactly the same
thing as write for an integer argument.)
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
- Specified by:
writeByte in interface DataOutput
- Parameters:
v - an int containing the byte value to be
written.
- Throws:
IOException - if an I/O error occurs.
writeShort
void writeShort(int v)
throws IOException
- Writes the 16 low-order bits of
v to the
stream. The 16 high-order bits of v are ignored.
If the stream uses network byte order, the bytes written, in
order, will be:
(byte)((v >> 8) & 0xff)
(byte)(v & 0xff)
Otherwise, the bytes written will be:
(byte)(v & 0xff)
(byte)((v >> 8) & 0xff)
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
- Specified by:
writeShort in interface DataOutput
- Parameters:
v - an int containing the short value to be
written.
- Throws:
IOException - if an I/O error occurs.
writeChar
void writeChar(int v)
throws IOException
- This method is a synonym for
writeShort .
- Specified by:
writeChar in interface DataOutput
- Parameters:
v - an int containing the char (unsigned
short) value to be written.
- Throws:
IOException - if an I/O error occurs.- See Also:
writeShort(int)
writeInt
void writeInt(int v)
throws IOException
- Writes the 32 bits of
v to the stream. If the
stream uses network byte order, the bytes written, in order,
will be:
(byte)((v >> 24) & 0xff)
(byte)((v >> 16) & 0xff)
(byte)((v >> 8) & 0xff)
(byte)(v & 0xff)
Otheriwse, the bytes written will be:
(byte)(v & 0xff)
(byte)((v >> 8) & 0xff)
(byte)((v >> 16) & 0xff)
(byte)((v >> 24) & 0xff)
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
- Specified by:
writeInt in interface DataOutput
- Parameters:
v - an int containing the value to be
written.
- Throws:
IOException - if an I/O error occurs.
writeLong
void writeLong(long v)
throws IOException
- Writes the 64 bits of
v to the stream. If the
stream uses network byte order, the bytes written, in order,
will be:
(byte)((v >> 56) & 0xff)
(byte)((v >> 48) & 0xff)
(byte)((v >> 40) & 0xff)
(byte)((v >> 32) & 0xff)
(byte)((v >> 24) & 0xff)
(byte)((v >> 16) & 0xff)
(byte)((v >> 8) & 0xff)
(byte)(v & 0xff)
Otherwise, the bytes written will be:
(byte)(v & 0xff)
(byte)((v >> 8) & 0xff)
(byte)((v >> 16) & 0xff)
(byte)((v >> 24) & 0xff)
(byte)((v >> 32) & 0xff)
(byte)((v >> 40) & 0xff)
(byte)((v >> 48) & 0xff)
(byte)((v >> 56) & 0xff)
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
- Specified by:
writeLong in interface DataOutput
- Parameters:
v - a long containing the value to be
written.
- Throws:
IOException - if an I/O error occurs.
writeFloat
void writeFloat(float v)
throws IOException
- Writes a
float value, which is comprised of four
bytes, to the output stream. It does this as if it first
converts this float value to an int
in exactly the manner of the Float.floatToIntBits
method and then writes the int value in exactly the manner of
the writeInt method.
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
- Specified by:
writeFloat in interface DataOutput
- Parameters:
v - a float containing the value to be
written.
- Throws:
IOException - if an I/O error occurs.
writeDouble
void writeDouble(double v)
throws IOException
- Writes a
double value, which is comprised of four
bytes, to the output stream. It does this as if it first
converts this double value to an long
in exactly the manner of the
Double.doubleToLongBits method and then writes the
long value in exactly the manner of the writeLong
method.
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
- Specified by:
writeDouble in interface DataOutput
- Parameters:
v - a double containing the value to be
written.
- Throws:
IOException - if an I/O error occurs.
writeBytes
void writeBytes(String s)
throws IOException
- Writes a string to the output stream. For every character in
the string
s , taken in order, one byte is written
to the output stream. If s is null , a
NullPointerException is thrown.
If s.length is zero, then no bytes are
written. Otherwise, the character s[0] is written
first, then s[1] , and so on; the last character
written is s[s.length-1] . For each character, one
byte is written, the low-order byte, in exactly the manner of
the writeByte method. The high-order eight bits of
each character in the string are ignored.
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
- Specified by:
writeBytes in interface DataOutput
- Parameters:
s - a String containing the value to be
written.
- Throws:
NullPointerException - if s is
null .
IOException - if an I/O error occurs.
writeChars
void writeChars(String s)
throws IOException
- Writes a string to the output stream. For every character in
the string
s , taken in order, two bytes are
written to the output stream, ordered according to the current
byte order setting. If network byte order is being used, the
high-order byte is written first; the order is reversed
otherwise. If s is null , a
NullPointerException is thrown.
If s.length is zero, then no bytes are
written. Otherwise, the character s[0] is written
first, then s[1] , and so on; the last character
written is s[s.length-1] .
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
- Specified by:
writeChars in interface DataOutput
- Parameters:
s - a String containing the value to be
written.
- Throws:
NullPointerException - if s is
null .
IOException - if an I/O error occurs.
writeUTF
void writeUTF(String s)
throws IOException
- Writes two bytes of length information to the output stream in
network byte order, followed by the
modified
UTF-8
representation of every character in the string
s .
If s is null , a
NullPointerException is thrown. Each character in
the string s is converted to a group of one, two,
or three bytes, depending on the value of the character.
If a character c is in the range
\u0001 through \u007f , it is
represented by one byte:
(byte)c
If a character c is \u0000 or
is in the range \u0080 through
\u07ff , then it is represented by two bytes,
to be written in the order shown:
(byte)(0xc0 | (0x1f & (c >> 6)))
(byte)(0x80 | (0x3f & c))
If a character c is in the range
\u0800 through uffff , then it is
represented by three bytes, to be written in the order shown:
(byte)(0xe0 | (0x0f & (c >> 12)))
(byte)(0x80 | (0x3f & (c >> 6)))
(byte)(0x80 | (0x3f & c))
First, the total number of bytes needed to represent all
the characters of s is calculated. If this number
is larger than 65535 , then a
UTFDataFormatException is thrown. Otherwise, this
length is written to the output stream in exactly the manner of
the writeShort method; after this, the one-, two-,
or three-byte representation of each character in the string
s is written.
The current byte order setting is ignored.
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
Note: This method should not be used in
the implementation of image formats that use standard UTF-8,
because the modified UTF-8 used here is incompatible with
standard UTF-8.
- Specified by:
writeUTF in interface DataOutput
- Parameters:
s - a String containing the value to be
written.
- Throws:
NullPointerException - if s is
null .
UTFDataFormatException - if the modified UTF-8
representation of s requires more than 65536 bytes.
IOException - if an I/O error occurs.
writeShorts
void writeShorts(short[] s,
int off,
int len)
throws IOException
- Writes a sequence of shorts to the stream at the current
position. If
len is 0, nothing is written.
The short s[off] is written first, then the short
s[off + 1] , and so on. The byte order of the
stream is used to determine the order in which the individual
bytes are written.
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
- Parameters:
s - an array of short s to be written.off - the start offset in the data.len - the number of short s to write.
- Throws:
IndexOutOfBoundsException - if off is
negative, len is negative, or off +
len is greater than s.length .
NullPointerException - if s is
null .
IOException - if an I/O error occurs.
writeChars
void writeChars(char[] c,
int off,
int len)
throws IOException
- Writes a sequence of chars to the stream at the current
position. If
len is 0, nothing is written.
The char c[off] is written first, then the char
c[off + 1] , and so on. The byte order of the
stream is used to determine the order in which the individual
bytes are written.
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
- Parameters:
c - an array of char s to be written.off - the start offset in the data.len - the number of char s to write.
- Throws:
IndexOutOfBoundsException - if off is
negative, len is negative, or off +
len is greater than c.length .
NullPointerException - if c is
null .
IOException - if an I/O error occurs.
writeInts
void writeInts(int[] i,
int off,
int len)
throws IOException
- Writes a sequence of ints to the stream at the current
position. If
len is 0, nothing is written.
The int i[off] is written first, then the int
i[off + 1] , and so on. The byte order of the
stream is used to determine the order in which the individual
bytes are written.
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
- Parameters:
i - an array of int s to be written.off - the start offset in the data.len - the number of int s to write.
- Throws:
IndexOutOfBoundsException - if off is
negative, len is negative, or off +
len is greater than i.length .
NullPointerException - if i is
null .
IOException - if an I/O error occurs.
writeLongs
void writeLongs(long[] l,
int off,
int len)
throws IOException
- Writes a sequence of longs to the stream at the current
position. If
len is 0, nothing is written.
The long l[off] is written first, then the long
l[off + 1] , and so on. The byte order of the
stream is used to determine the order in which the individual
bytes are written.
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
- Parameters:
l - an array of long s to be written.off - the start offset in the data.len - the number of long s to write.
- Throws:
IndexOutOfBoundsException - if off is
negative, len is negative, or off +
len is greater than l.length .
NullPointerException - if l is
null .
IOException - if an I/O error occurs.
writeFloats
void writeFloats(float[] f,
int off,
int len)
throws IOException
- Writes a sequence of floats to the stream at the current
position. If
len is 0, nothing is written.
The float f[off] is written first, then the float
f[off + 1] , and so on. The byte order of the
stream is used to determine the order in which the individual
bytes are written.
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
- Parameters:
f - an array of float s to be written.off - the start offset in the data.len - the number of float s to write.
- Throws:
IndexOutOfBoundsException - if off is
negative, len is negative, or off +
len is greater than f.length .
NullPointerException - if f is
null .
IOException - if an I/O error occurs.
writeDoubles
void writeDoubles(double[] d,
int off,
int len)
throws IOException
- Writes a sequence of doubles to the stream at the current
position. If
len is 0, nothing is written.
The double d[off] is written first, then the double
d[off + 1] , and so on. The byte order of the
stream is used to determine the order in which the individual
bytes are written.
If the bit offset within the stream is non-zero, the
remainder of the current byte is padded with 0s
and written out first. The bit offset will be 0 after the
write.
- Parameters:
d - an array of doubles s to be written.off - the start offset in the data.len - the number of double s to write.
- Throws:
IndexOutOfBoundsException - if off is
negative, len is negative, or off +
len is greater than d.length .
NullPointerException - if d is
null .
IOException - if an I/O error occurs.
writeBit
void writeBit(int bit)
throws IOException
- Writes a single bit, given by the least significant bit of the
argument, to the stream at the current bit offset within the
current byte position. The upper 31 bits of the argument are
ignored. The given bit replaces the previous bit at that
position. The bit offset is advanced by one and reduced modulo
8.
If any bits of a particular byte have never been set
at the time the byte is flushed to the destination, those
bits will be set to 0 automatically.
- Parameters:
bit - an int whose least significant bit
is to be written to the stream.
- Throws:
IOException - if an I/O error occurs.
writeBits
void writeBits(long bits,
int numBits)
throws IOException
- Writes a sequence of bits, given by the
numBits
least significant bits of the bits argument in
left-to-right order, to the stream at the current bit offset
within the current byte position. The upper 64 -
numBits bits of the argument are ignored. The bit
offset is advanced by numBits and reduced modulo
8. Note that a bit offset of 0 always indicates the
most-significant bit of the byte, and bytes of bits are written
out in sequence as they are encountered. Thus bit writes are
always effectively in network byte order. The actual stream
byte order setting is ignored.
Bit data may be accumulated in memory indefinitely, until
flushBefore is called. At that time, all bit data
prior to the flushed position will be written.
If any bits of a particular byte have never been set
at the time the byte is flushed to the destination, those
bits will be set to 0 automatically.
- Parameters:
bits - a long containing the bits to be
written, starting with the bit in position numBits -
1 down to the least significant bit.numBits - an int between 0 and 64, inclusive.
- Throws:
IllegalArgumentException - if numBits is
not between 0 and 64, inclusive.
IOException - if an I/O error occurs.
flushBefore
void flushBefore(long pos)
throws IOException
- Flushes all data prior to the given position to the underlying
destination, such as an
OutputStream or
File . Attempting to seek to the flushed portion
of the stream will result in an
IndexOutOfBoundsException .
- Specified by:
flushBefore in interface ImageInputStream
- Parameters:
pos - a long containing the length of the
stream prefix that may be flushed to the destination.
- Throws:
IndexOutOfBoundsException - if pos lies
in the flushed portion of the stream or past the current stream
position.
IOException - if an I/O error occurs.
Submit a bug or feature For further API reference and developer documentation, see Java SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples. Copyright 2010 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.
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