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java.io
Class FilterWriter
java.lang.Object
java.io.Writer
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. |
Method Summary
|
void |
close
()
Closes
Close
the
stream, flushing it first.
stream.
|
void |
flush
()
Flushes
Flush
the stream. |
void |
write
(char[] cbuf, int off, int len)
Writes
Write
a portion of an array of characters. |
void |
write
(int c)
Writes
Write
a single character. |
void |
write
(
String
Writes
Write
a portion of a string. |
Methods inherited from class java.lang.
Object
|
clone
,
equals
,
finalize
,
getClass
,
hashCode
,
notify
,
notifyAll
,
toString
,
wait
,
wait
,
wait
|
out
protected Writer out
-
The underlying character-output stream.
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
write
public void write(int c)
throws IOException
-
Writes
Write
a single character.
-
-
Overrides:
-
write
in class
Writer
-
-
Parameters:
-
c - int specifying a character to be
written
written.
-
Throws:
-
IOException
- If an I/O error occurs
write
public void write(char[] cbuf,
int off,
int len)
throws IOException
-
Writes
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
-
Writes
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
-
Flushes
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
-
Description copied from class:
Writer
-
Closes the stream, flushing it first. Once the stream has been closed, further write() or flush() invocations will cause an IOException to be thrown. Closing a previously closed stream has no effect.
Close the stream.
-
-
Specified by:
-
close
in interface
Closeable
-
Specified by:
-
close
in class
Writer
-
-
Throws:
-
IOException
- If an I/O error occurs