Package org.apache.commons.io.output

Class ProxyWriter

java.lang.Object

java.io.Writer

java.io.FilterWriter

org.apache.commons.io.output.ProxyWriter

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.Appendable, java.lang.AutoCloseable

Direct Known Subclasses:

CloseShieldWriter, TaggedWriter

public class ProxyWriter
extends java.io.FilterWriter

A Proxy stream which acts as expected, that is it passes the method calls on to the proxied stream and doesn't change which methods are being called. It is an alternative base class to FilterWriter to increase reusability, because FilterWriter changes the methods being called, such as write(char[]) to write(char[], int, int) and write(String) to write(String, int, int).

Constructor Summary

Constructors

Constructor	Description
ProxyWriter(java.io.Writer proxy)	Constructs a new ProxyWriter.

Method Summary

Modifier and Type	Method	Description
java.io.Writer	append(char c)	Invokes the delegate's append(char) method.
java.io.Writer	append(java.lang.CharSequence csq)	Invokes the delegate's append(CharSequence) method.
java.io.Writer	append(java.lang.CharSequence csq, int start, int end)	Invokes the delegate's append(CharSequence, int, int) method.
void	close()	Invokes the delegate's close() method.
void	flush()	Invokes the delegate's flush() method.
void	write(char[] cbuf)	Invokes the delegate's write(char[]) method.
void	write(char[] cbuf, int off, int len)	Invokes the delegate's write(char[], int, int) method.
void	write(int c)	Invokes the delegate's write(int) method.
void	write(java.lang.String str)	Invokes the delegate's write(String) method.
void	write(java.lang.String str, int off, int len)	Invokes the delegate's write(String) method.

Methods inherited from class java.io.Writer

nullWriter

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ProxyWriter

public ProxyWriter(java.io.Writer proxy)

Constructs a new ProxyWriter.

Parameters:

proxy - the Writer to delegate to

Method Detail

append

public java.io.Writer append(char c)
                      throws java.io.IOException

Invokes the delegate's append(char) method.

Specified by:

append in interface java.lang.Appendable

Overrides:

append in class java.io.Writer

Parameters:

c - The character to write

Returns:

this writer

Throws:

java.io.IOException - if an I/O error occurs.

Since:

2.0

append

public java.io.Writer append(java.lang.CharSequence csq,
                             int start,
                             int end)
                      throws java.io.IOException

Invokes the delegate's append(CharSequence, int, int) method.

Specified by:

append in interface java.lang.Appendable

Overrides:

append in class java.io.Writer

Parameters:

csq - The character sequence to write

start - The index of the first character to write

end - The index of the first character to write (exclusive)

Returns:

this writer

Throws:

java.io.IOException - if an I/O error occurs.

Since:

2.0

append

public java.io.Writer append(java.lang.CharSequence csq)
                      throws java.io.IOException

Invokes the delegate's append(CharSequence) method.

Specified by:

append in interface java.lang.Appendable

Overrides:

append in class java.io.Writer

Parameters:

csq - The character sequence to write

Returns:

this writer

Throws:

java.io.IOException - if an I/O error occurs.

Since:

2.0

write

public void write(int c)
           throws java.io.IOException

Invokes the delegate's write(int) method.

Overrides:

write in class java.io.FilterWriter

Parameters:

c - the character to write

Throws:

java.io.IOException - if an I/O error occurs.

write

public void write(char[] cbuf)
           throws java.io.IOException

Invokes the delegate's write(char[]) method.

Overrides:

write in class java.io.Writer

Parameters:

cbuf - the characters to write

Throws:

java.io.IOException - if an I/O error occurs.

write

public void write(char[] cbuf,
                  int off,
                  int len)
           throws java.io.IOException

Invokes the delegate's write(char[], int, int) method.

Overrides:

write in class java.io.FilterWriter

Parameters:

cbuf - the characters to write

off - The start offset

len - The number of characters to write

Throws:

java.io.IOException - if an I/O error occurs.

write

public void write(java.lang.String str)
           throws java.io.IOException

Invokes the delegate's write(String) method.

Overrides:

write in class java.io.Writer

Parameters:

str - the string to write

Throws:

java.io.IOException - if an I/O error occurs.

write

public void write(java.lang.String str,
                  int off,
                  int len)
           throws java.io.IOException

Invokes the delegate's write(String) method.

Overrides:

write in class java.io.FilterWriter

Parameters:

str - the string to write

off - The start offset

len - The number of characters to write

Throws:

java.io.IOException - if an I/O error occurs.

flush

public void flush()
           throws java.io.IOException

Invokes the delegate's flush() method.

Specified by:

flush in interface java.io.Flushable

Overrides:

flush in class java.io.FilterWriter

Throws:

java.io.IOException - if an I/O error occurs.

close

public void close()
           throws java.io.IOException

Invokes the delegate's close() method.

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.FilterWriter

Throws:

java.io.IOException - if an I/O error occurs.