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public
abstract
class
FilterWriter
extends Writer
java.lang.Object | ||
↳ | java.io.Writer | |
↳ | java.io.FilterWriter |
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.
Fields | |
---|---|
protected
Writer |
out
The underlying character-output stream. |
Inherited fields |
---|
Protected constructors | |
---|---|
FilterWriter(Writer out)
Create a new filtered writer. |
Public methods | |
---|---|
void
|
close()
Closes the stream, flushing it first. |
void
|
flush()
Flushes the stream. |
void
|
write(int c)
Writes a single character. |
void
|
write(String str, int off, int len)
Writes a portion of a string. |
void
|
write(char[] cbuf, int off, int len)
Writes a portion of an array of characters. |
Inherited methods | |
---|---|
protected FilterWriter (Writer out)
Create a new filtered writer.
Parameters | |
---|---|
out |
Writer : a Writer object to provide the underlying stream. |
Throws | |
---|---|
NullPointerException |
if out is null |
public void close ()
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.
Throws | |
---|---|
IOException |
public void write (int c)
Writes a single character.
Parameters | |
---|---|
c |
int : int specifying a character to be written |
Throws | |
---|---|
IOException |
If an I/O error occurs |
public void write (String str, int off, int len)
Writes a portion of a string.
Parameters | |
---|---|
str |
String : String to be written |
off |
int : Offset from which to start reading characters |
len |
int : Number of characters to be written |
Throws | |
---|---|
IOException |
If an I/O error occurs |
public void write (char[] cbuf, int off, int len)
Writes a portion of an array of characters.
Parameters | |
---|---|
cbuf |
char : Buffer of characters to be written |
off |
int : Offset from which to start reading characters |
len |
int : Number of characters to be written |
Throws | |
---|---|
IOException |
If an I/O error occurs |