public class LimitedLengthInputStream extends FilterInputStream
in
Constructor and Description |
---|
LimitedLengthInputStream(InputStream in,
long offset,
long length) |
Modifier and Type | Method and Description |
---|---|
int |
read()
Reads the next byte of data from this input stream.
|
int |
read(byte[] buffer)
Reads up to
byte.length bytes of data from this
input stream into an array of bytes. |
int |
read(byte[] buffer,
int offset,
int byteCount)
Reads up to
len bytes of data from this input stream
into an array of bytes. |
available, close, mark, markSupported, reset, skip
public LimitedLengthInputStream(InputStream in, long offset, long length) throws IOException
in
- underlying stream to wrapoffset
- offset into stream where data startslength
- length of data at offsetIOException
- if an error occurred with the underlying streampublic int read() throws IOException
FilterInputStream
int
in the range
0
to 255
. If no byte is available
because the end of the stream has been reached, the value
-1
is returned. This method blocks until input data
is available, the end of the stream is detected, or an exception
is thrown.
This method
simply performs in.read()
and returns the result.
read
in class FilterInputStream
-1
if the end of the
stream is reached.IOException
- if an I/O error occurs.FilterInputStream.in
public int read(byte[] buffer, int offset, int byteCount) throws IOException
FilterInputStream
len
bytes of data from this input stream
into an array of bytes. If len
is not zero, the method
blocks until some input is available; otherwise, no
bytes are read and 0
is returned.
This method simply performs in.read(b, off, len)
and returns the result.
read
in class FilterInputStream
buffer
- the buffer into which the data is read.offset
- the start offset in the destination array b
byteCount
- the maximum number of bytes read.-1
if there is no more data because the end of
the stream has been reached.IOException
- if an I/O error occurs.FilterInputStream.in
public int read(byte[] buffer) throws IOException
FilterInputStream
byte.length
bytes of data from this
input stream into an array of bytes. This method blocks until some
input is available.
This method simply performs the call
read(b, 0, b.length)
and returns
the result. It is important that it does
not do in.read(b)
instead;
certain subclasses of FilterInputStream
depend on the implementation strategy actually
used.
read
in class FilterInputStream
buffer
- the buffer into which the data is read.-1
if there is no more data because the end of
the stream has been reached.IOException
- if an I/O error occurs.FilterInputStream.read(byte[], int, int)