The standard classes in the
javax.imageio.stream package are able to create
ImageInputStreams and ImageOutputStreams
that:
- Read from a
File
- Read from an
InputStream, using a temporary File as a
cache
- Read from an
InputStream, using a byte array in memory as a
cache
- Write to a
File
- Write to an
OutputStream, using a temporary File as a
cache
- Write to an
OutputStream, using a byte array in memory as a
cache
It is possible to write new
implementations of ImageInputStream and
InmageOutputStream that interface with other I/O primitives (for
example, databases or future fast I/O interfaces). The
ImageInputStreamImpl and
ImageOutputStreamImpl classes provide a base for
subclassing. Only a handful of methods are required to be
implemented by the subclass, although it is possible to implement
more for greater efficiency:
-
int read()
-
int read(byte[] b, int off,
int len)
-
write(int b)
-
write(byte[] b, int off,
int len)
-
seek(long pos)
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