java.io
Class StringWriter

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

All Implemented Interfaces:

Appendable , Closeable

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

Field Summary

 

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
append , append , write

 

Methods inherited from class java.lang. Object
clone , equals , finalize , getClass , hashCode , notify , notifyAll , wait , wait , wait

 

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.

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 interface Closeable

Specified by:

close in class Writer

Throws:

IOException - If an I/O error occurs