Class java.io.FilterReader - JDK 5 Documentation v1.1.8, Java 2 SDK 英文文档

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Class java.io.FilterReader

java.lang.Object
   |
   +----java.io.Reader
           |
           +----java.io.FilterReader

public abstract class FilterReader
extends Reader

Abstract class for reading filtered character streams.

in: The underlying character-input stream, or null if the stream has been closed

FilterReader(Reader): Create a new filtered reader.

close(): Close the stream.
mark(int): Mark the present position in the stream.
markSupported(): Tell whether this stream supports the mark() operation.
read(): Read a single character.
read(char[], int, int): Read characters into a portion of an array.
ready(): Tell whether this stream is ready to be read.
reset(): Reset the stream.
skip(long): Skip characters.

 protected Reader in

The underlying character-input stream, or null if the stream has been closed

FilterReader

 protected FilterReader(Reader in)

Create a new filtered reader.

read

 public int read() throws IOException

Read a single character.

Throws: IOException: If an I/O error occurs
Overrides:: read in class Reader

read

 public int read(char cbuf[],
                 int off,
                 int len) throws IOException

Read characters into a portion of an array.

Throws: IOException: If an I/O error occurs
Overrides:: read in class Reader

skip

 public long skip(long n) throws IOException

Skip characters.

Throws: IOException: If an I/O error occurs
Overrides:: skip in class Reader

ready

 public boolean ready() throws IOException

Tell whether this stream is ready to be read.

Throws: IOException: If an I/O error occurs
Overrides:: ready in class Reader

markSupported

 public boolean markSupported()

Tell whether this stream supports the mark() operation.

Overrides:: markSupported in class Reader

mark

 public void mark(int readAheadLimit) throws IOException

Mark the present position in the stream.

Throws: IOException: If an I/O error occurs
Overrides:: mark in class Reader

reset

 public void reset() throws IOException

Reset the stream.

Throws: IOException: If an I/O error occurs
Overrides:: reset in class Reader

close

 public void close() throws IOException

Close the stream.

Throws: IOException: If an I/O error occurs
Overrides:: close in class Reader

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