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java.lang.Objectjava.io.InputStream
java.io.FilterInputStream
org.ka2ddo.yaac.io.NonshareableDataInputStream
public final class NonshareableDataInputStream
This class is a duplicate of java.io.DataInputStream, without the byte counter and the synchronization, so it can only be used by a single thread.
Field Summary |
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Fields inherited from class java.io.FilterInputStream |
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in |
Constructor Summary | |
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NonshareableDataInputStream(java.io.InputStream in)
Creates a NonshareableDataInputStream that uses the specified underlying InputStream. |
Method Summary | |
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int |
read(byte[] b)
Reads some number of bytes from the contained input stream and stores them into the buffer array b . |
int |
read(byte[] b,
int off,
int len)
Reads up to len bytes of data from the contained
input stream into an array of bytes. |
boolean |
readBoolean()
See the general contract of the readBoolean
method of DataInput . |
byte |
readByte()
See the general contract of the readByte
method of DataInput . |
char |
readChar()
See the general contract of the readChar
method of DataInput . |
double |
readDouble()
See the general contract of the readDouble
method of DataInput . |
float |
readFloat()
See the general contract of the readFloat
method of DataInput . |
void |
readFully(byte[] b)
See the general contract of the readFully
method of DataInput . |
void |
readFully(byte[] b,
int off,
int len)
See the general contract of the readFully
method of DataInput . |
int |
readInt()
See the general contract of the readInt
method of DataInput . |
java.lang.String |
readLine()
See the general contract of the readLine
method of DataInput . |
long |
readLong()
See the general contract of the readLong
method of DataInput . |
short |
readShort()
See the general contract of the readShort
method of DataInput . |
int |
readUnsignedByte()
See the general contract of the readUnsignedByte
method of DataInput . |
int |
readUnsignedShort()
See the general contract of the readUnsignedShort
method of DataInput . |
java.lang.String |
readUTF()
See the general contract of the readUTF
method of DataInput . |
int |
skipBytes(int n)
See the general contract of the skipBytes
method of DataInput . |
Methods inherited from class java.io.FilterInputStream |
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available, close, mark, markSupported, read, reset, skip |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public NonshareableDataInputStream(java.io.InputStream in)
in
- the specified input streamMethod Detail |
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public final int read(byte[] b) throws java.io.IOException
b
. The number of
bytes actually read is returned as an integer. This method blocks
until input data is available, end of file is detected, or an
exception is thrown.
If b
is null, a NullPointerException
is
thrown. If the length of b
is zero, then no bytes are
read and 0
is returned; otherwise, there is an attempt
to read at least one byte. If no byte is available because the
stream is at end of file, the value -1
is returned;
otherwise, at least one byte is read and stored into b
.
The first byte read is stored into element b[0]
, the
next one into b[1]
, and so on. The number of bytes read
is, at most, equal to the length of b
. Let k
be the number of bytes actually read; these bytes will be stored in
elements b[0]
through b[k-1]
, leaving
elements b[k]
through b[b.length-1]
unaffected.
The read(b)
method has the same effect as:
read(b, 0, b.length)
read
in class java.io.FilterInputStream
b
- the buffer into which the data is read.
-1
if there is no more data because the end
of the stream has been reached.
java.io.IOException
- if the first byte cannot be read for any reason
other than end of file, the stream has been closed and the underlying
input stream does not support reading after close, or another I/O
error occurs.FilterInputStream.in
,
InputStream.read(byte[], int, int)
public final int read(byte[] b, int off, int len) throws java.io.IOException
len
bytes of data from the contained
input stream into an array of bytes. An attempt is made to read
as many as len
bytes, but a smaller number may be read,
possibly zero. The number of bytes actually read is returned as an
integer.
This method blocks until input data is available, end of file is detected, or an exception is thrown.
If len
is zero, then no bytes are read and
0
is returned; otherwise, there is an attempt to read at
least one byte. If no byte is available because the stream is at end of
file, the value -1
is returned; otherwise, at least one
byte is read and stored into b
.
The first byte read is stored into element b[off]
, the
next one into b[off+1]
, and so on. The number of bytes read
is, at most, equal to len
. Let k be the number of
bytes actually read; these bytes will be stored in elements
b[off]
through b[off+
k-1]
,
leaving elements b[off+
k]
through
b[off+len-1]
unaffected.
In every case, elements b[0]
through
b[off]
and elements b[off+len]
through
b[b.length-1]
are unaffected.
read
in class java.io.FilterInputStream
b
- the buffer into which the data is read.off
- the start offset in the destination array b
len
- the maximum number of bytes read.
-1
if there is no more data because the end
of the stream has been reached.
java.lang.NullPointerException
- If b
is null
.
java.lang.IndexOutOfBoundsException
- If off
is negative,
len
is negative, or len
is greater than
b.length - off
java.io.IOException
- if the first byte cannot be read for any reason
other than end of file, the stream has been closed and the underlying
input stream does not support reading after close, or another I/O
error occurs.FilterInputStream.in
,
InputStream.read(byte[], int, int)
public final void readFully(byte[] b) throws java.io.IOException
readFully
method of DataInput
.
Bytes for this operation are read from the contained input stream.
readFully
in interface java.io.DataInput
b
- the buffer into which the data is read.
java.io.EOFException
- if this input stream reaches the end before
reading all the bytes.
java.io.IOException
- the stream has been closed and the contained
input stream does not support reading after close, or
another I/O error occurs.FilterInputStream.in
public final void readFully(byte[] b, int off, int len) throws java.io.IOException
readFully
method of DataInput
.
Bytes for this operation are read from the contained input stream.
readFully
in interface java.io.DataInput
b
- the buffer into which the data is read.off
- the start offset of the data.len
- the number of bytes to read.
java.io.EOFException
- if this input stream reaches the end before
reading all the bytes.
java.io.IOException
- the stream has been closed and the contained
input stream does not support reading after close, or
another I/O error occurs.FilterInputStream.in
public final int skipBytes(int n) throws java.io.IOException
skipBytes
method of DataInput
.
Bytes for this operation are read from the contained input stream.
skipBytes
in interface java.io.DataInput
n
- the number of bytes to be skipped.
java.io.IOException
- if the contained input stream does not support
seek, or the stream has been closed and
the contained input stream does not support
reading after close, or another I/O error occurs.public final boolean readBoolean() throws java.io.IOException
readBoolean
method of DataInput
.
Bytes for this operation are read from the contained input stream.
readBoolean
in interface java.io.DataInput
boolean
value read.
java.io.EOFException
- if this input stream has reached the end.
java.io.IOException
- the stream has been closed and the contained
input stream does not support reading after close, or
another I/O error occurs.FilterInputStream.in
public final byte readByte() throws java.io.IOException
readByte
method of DataInput
.
Bytes for this operation are read from the contained input stream.
readByte
in interface java.io.DataInput
byte
.
java.io.EOFException
- if this input stream has reached the end.
java.io.IOException
- the stream has been closed and the contained
input stream does not support reading after close, or
another I/O error occurs.FilterInputStream.in
public final int readUnsignedByte() throws java.io.IOException
readUnsignedByte
method of DataInput
.
Bytes for this operation are read from the contained input stream.
readUnsignedByte
in interface java.io.DataInput
java.io.EOFException
- if this input stream has reached the end.
java.io.IOException
- the stream has been closed and the contained
input stream does not support reading after close, or
another I/O error occurs.FilterInputStream.in
public final short readShort() throws java.io.IOException
readShort
method of DataInput
.
Bytes for this operation are read from the contained input stream.
readShort
in interface java.io.DataInput
java.io.EOFException
- if this input stream reaches the end before
reading two bytes.
java.io.IOException
- the stream has been closed and the contained
input stream does not support reading after close, or
another I/O error occurs.FilterInputStream.in
public final int readUnsignedShort() throws java.io.IOException
readUnsignedShort
method of DataInput
.
Bytes for this operation are read from the contained input stream.
readUnsignedShort
in interface java.io.DataInput
java.io.EOFException
- if this input stream reaches the end before
reading two bytes.
java.io.IOException
- the stream has been closed and the contained
input stream does not support reading after close, or
another I/O error occurs.FilterInputStream.in
public final char readChar() throws java.io.IOException
readChar
method of DataInput
.
Bytes for this operation are read from the contained input stream.
readChar
in interface java.io.DataInput
char
.
java.io.EOFException
- if this input stream reaches the end before
reading two bytes.
java.io.IOException
- the stream has been closed and the contained
input stream does not support reading after close, or
another I/O error occurs.FilterInputStream.in
public final int readInt() throws java.io.IOException
readInt
method of DataInput
.
Bytes for this operation are read from the contained input stream.
readInt
in interface java.io.DataInput
int
.
java.io.EOFException
- if this input stream reaches the end before
reading four bytes.
java.io.IOException
- the stream has been closed and the contained
input stream does not support reading after close, or
another I/O error occurs.FilterInputStream.in
public final long readLong() throws java.io.IOException
readLong
method of DataInput
.
Bytes for this operation are read from the contained input stream.
readLong
in interface java.io.DataInput
long
.
java.io.EOFException
- if this input stream reaches the end before
reading eight bytes.
java.io.IOException
- the stream has been closed and the contained
input stream does not support reading after close, or
another I/O error occurs.FilterInputStream.in
public final float readFloat() throws java.io.IOException
readFloat
method of DataInput
.
Bytes for this operation are read from the contained input stream.
readFloat
in interface java.io.DataInput
float
.
java.io.EOFException
- if this input stream reaches the end before
reading four bytes.
java.io.IOException
- the stream has been closed and the contained
input stream does not support reading after close, or
another I/O error occurs.DataInputStream.readInt()
,
Float.intBitsToFloat(int)
public final double readDouble() throws java.io.IOException
readDouble
method of DataInput
.
Bytes for this operation are read from the contained input stream.
readDouble
in interface java.io.DataInput
double
.
java.io.EOFException
- if this input stream reaches the end before
reading eight bytes.
java.io.IOException
- the stream has been closed and the contained
input stream does not support reading after close, or
another I/O error occurs.DataInputStream.readLong()
,
Double.longBitsToDouble(long)
public final java.lang.String readLine() throws java.io.IOException
readLine
method of DataInput
.
Bytes for this operation are read from the contained input stream. Note that this method only supports extended 8-bit ASCII; it does not support UTF-8 or other locale-specific character sets.
readLine
in interface java.io.DataInput
java.io.IOException
- if an I/O error occurs.BufferedReader.readLine()
,
FilterInputStream.in
public final java.lang.String readUTF() throws java.io.IOException
readUTF
method of DataInput
.
Bytes for this operation are read from the contained input stream.
readUTF
in interface java.io.DataInput
java.io.EOFException
- if this input stream reaches the end before
reading all the bytes.
java.io.IOException
- the stream has been closed and the contained
input stream does not support reading after close, or
another I/O error occurs.
java.io.UTFDataFormatException
- if the bytes do not represent a valid
modified UTF-8 encoding of a string.DataInputStream.readUTF(java.io.DataInput)
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