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JavaTM 2 Platform Std. Ed. v1.5.0

java.io
Class FilterWriter

java.lang.Object
  extended by java.io.Writer
      extended by java.io.FilterWriter
All Implemented Interfaces:
Closeable, Flushable, Appendable

public abstract class FilterWriter
extends Writer

Abstract class for writing filtered character streams. The abstract class FilterWriter itself provides default methods that pass all requests to the contained stream. Subclasses of FilterWriter should override some of these methods and may also provide additional methods and fields.

Since:
JDK1.1

Field Summary
protected  Writer out
          The underlying character-output stream.
 
Fields inherited from class java.io.Writer
lock
 
Constructor Summary
protected FilterWriter(Writer out)
          Create a new filtered writer.
 
Method Summary
 void close()
          Close the stream.
 void flush()
          Flush the stream.
 void write(char[] cbuf, int off, int len)
          Write a portion of an array of characters.
 void write(int c)
          Write a single character.
 void write(String str, int off, int len)
          Write a portion of a string.
 
Methods inherited from class java.io.Writer
append, append, append, write, write
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

out

protected Writer out
The underlying character-output stream.

Constructor Detail

FilterWriter

protected FilterWriter(Writer out)
Create a new filtered writer.

Parameters:
out - a Writer object to provide the underlying stream.
Throws:
NullPointerException - if out is null
Method Detail

write

public void write(int c)
           throws IOException
Write a single character.

Overrides:
write in class Writer
Parameters:
c - int specifying a character to be written.
Throws:
IOException - If an I/O error occurs

write

public void write(char[] cbuf,
                  int off,
                  int len)
           throws IOException
Write a portion of an array of characters.

Specified by:
write in class Writer
Parameters:
cbuf - Buffer of characters to be written
off - Offset from which to start reading characters
len - Number of characters to be written
Throws:
IOException - If an I/O error occurs

write

public void write(String str,
                  int off,
                  int len)
           throws IOException
Write a portion of a string.

Overrides:
write in class Writer
Parameters:
str - String to be written
off - Offset from which to start reading characters
len - Number of characters to be written
Throws:
IOException - If an I/O error occurs

flush

public void flush()
           throws IOException
Flush the stream.

Specified by:
flush in interface Flushable
Specified by:
flush in class Writer
Throws:
IOException - If an I/O error occurs

close

public void close()
           throws IOException
Close the stream.

Specified by:
close in interface Closeable
Specified by:
close in class Writer
Throws:
IOException - If an I/O error occurs

Copyright 2003 Sun Microsystems, Inc. All rights reserved