java.io
Class FilterReader
- AutoCloseable, Closeable, Readable
This is the common superclass of all standard classes that filter
input. It acts as a layer on top of an underlying
Reader
and simply redirects calls made to it to the subordinate Reader
instead. Subclasses of this class perform additional filtering
functions in addition to simply redirecting the call.
When creating a subclass of FilterReader
, override the
appropriate methods to implement the desired filtering. However, note
that the read(char[])
method does not need to be overridden
as this class redirects calls to that method to
read(yte[], int, int)
instead of to the subordinate
Reader} read(yte[])
method.
protected Reader | in - This is the subordinate
Reader to which method calls
are redirected
|
void | close() - This method closes the stream by calling the
close() method
of the underlying stream.
|
void | mark(int readlimit) - Calls the
in.mark(int) method.
|
boolean | markSupported() - Calls the
in.markSupported() method.
|
int | read() - Calls the
in.read() method
|
int | read(char[] buf, int offset, int len) - Calls the
in.read(char[], int, int) method.
|
boolean | ready() - Calls the
in.read() method.
|
void | reset() - Calls the
in.reset() method.
|
long | skip(long num_chars) - Calls the
in.skip(long) method
|
clone , equals , extends Object> getClass , finalize , hashCode , notify , notifyAll , toString , wait , wait , wait |
read
public int read(char[] buf,
int offset,
int len)
throws IOException
Calls the in.read(char[], int, int)
method.
buf
- The buffer to read chars intooffset
- The index into the buffer to start storing charslen
- The maximum number of chars to read.
- The value retured from
in.read(char[], int, int)
FilterReader.java -- Base class for char stream classes that filter input
Copyright (C) 1998, 1999, 2001, 2003, 2005 Free Software Foundation, Inc.
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