java.lang.Objectjava.io.InputStream
java.io.FilterInputStream
All Implemented Interfaces:
Closeable
Direct Known Subclasses:
ZipFileInflaterInputStream, ZipInputStream, InflaterInputStream, DataInputStream, BufferedInputStream, FastInputStream, PushbackInputStream, CheckedInputStream, DeflaterInputStream, LineNumberInputStream, CipherInputStream, JarInputStream, GZIPInputStream, ProgressMonitorInputStream, DigestInputStream
FilterInputStream
contains
some other input stream, which it uses as
its basic source of data, possibly transforming
the data along the way or providing additional
functionality. The class FilterInputStream
itself simply overrides all methods of
InputStream
with versions that
pass all requests to the contained input
stream. Subclasses of FilterInputStream
may further override some of these methods
and may also provide additional methods
and fields.Jonathan
- PayneJDK1.0
- Field Summary | ||
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protected volatile InputStream | in | The input stream to be filtered. |
Constructor: |
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FilterInputStream
by assigning the argument in
to the field this.in so as
to remember it for later use.
|
Method from java.io.FilterInputStream Summary: |
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available, close, mark, markSupported, read, read, read, reset, skip |
Methods from java.io.InputStream: |
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available, close, mark, markSupported, read, read, read, reset, skip |
Methods from java.lang.Object: |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method from java.io.FilterInputStream Detail: |
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This method returns the result of in .available(). |
in.close() . |
reset method repositions this stream at
the last marked position so that subsequent reads re-read the same bytes.
The
This method simply performs |
mark
and reset methods.
This method
simply performs in.markSupported() . |
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 |
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
|
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 |
mark method was last called on this input stream.
This method
simply performs Stream marks are intended to be used in situations where you need to read ahead a little to see what's in the stream. Often this is most easily done by invoking some general parser. If the stream is of the type handled by the parse, it just chugs along happily. If the stream is not of that type, the parser should toss an exception when it fails. If this happens within readlimit bytes, it allows the outer code to reset the stream and try another parser. |
n bytes of data from the
input stream. The skip method may, for a variety of
reasons, end up skipping over some smaller number of bytes,
possibly 0 . The actual number of bytes skipped is
returned.
This method simply performs |