java.io
Class StringWriter

java.lang.Object
  java.io.Writer
      java.io.StringWriter

public class StringWriter

extends Writer

A character stream that collects its output in a string buffer, which can then be used to construct a string.

Closing a StringWriter has no effect. The methods in this class can be called after the stream has been closed without generating an IOException.

Since:

JDK1.1

Author:

Mark Reinhold

Field Summary

private StringBuffer

buf

Fields inherited from class java.io.Writer

lock

Constructor Summary

StringWriter()
Create a new string writer, using the default initial string-buffer size.

StringWriter(int initialSize)
Create a new string writer, using the specified initial string-buffer size.

Method Summary

void	close() Closing a StringWriter has no effect.
void	flush() Flush the stream.
StringBuffer	getBuffer() Return the string buffer itself.
String	toString() Return the buffer's current value as a string.
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) Write a string.
void	write(String str, int off, int len) Write a portion of a string.

Methods inherited from class java.io.Writer

write

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

buf

private StringBuffer buf

Constructor Detail

StringWriter

public StringWriter()

Create a new string writer, using the default initial string-buffer size.

StringWriter

public StringWriter(int initialSize)

Create a new string writer, using the specified initial string-buffer size.

Parameters:

initialSize - an int specifying the initial size of the buffer.

Method Detail

write

public void write(int c)

Write a single character.

Overrides:

write in class Writer

Parameters:

c - int specifying a character to be written.

write

public void write(char[] cbuf,
                  int off,
                  int len)

Write a portion of an array of characters.

Specified by:

write in class Writer

Parameters:

cbuf - Array of characters

off - Offset from which to start writing characters

len - Number of characters to write

write

public void write(String str)

Write a string.

Overrides:

write in class Writer

Parameters:

str - String to be written

write

public void write(String str,
                  int off,
                  int len)

Write a portion of a string.

Overrides:

write in class Writer

Parameters:

str - String to be written

off - Offset from which to start writing characters

len - Number of characters to write

toString

public String toString()

Return the buffer's current value as a string.

Overrides:

toString in class Object

Returns:

a string representation of the object.

getBuffer

public StringBuffer getBuffer()

Return the string buffer itself.

Returns:

StringBuffer holding the current buffer value.

flush

public void flush()

Flush the stream.

Specified by:

flush in class Writer

close

public void close()
           throws IOException

Closing a StringWriter has no effect. The methods in this class can be called after the stream has been closed without generating an IOException.

Specified by:

close in class Writer

Throws:

IOException - If an I/O error occurs