org.jfree.report.util

Class MemoryStringWriter


public class MemoryStringWriter
extends Writer

A string writer that is able to write large amounts of data. The original StringWriter contained in Java doubles its buffersize everytime the buffer overflows. This is nice with small amounts of data, but awfull for huge buffers.
Author:
Thomas Morgner

Constructor Summary

MemoryStringWriter()
Create a new character-stream writer whose critical sections will synchronize on the writer itself.
MemoryStringWriter(int bufferSize)
Create a new character-stream writer whose critical sections will synchronize on the writer itself.

Method Summary

void
close()
Close the stream, flushing it first.
void
flush()
Flush the stream.
String
toString()
void
write(char[] cbuf, int off, int len)
Write a portion of an array of characters.

Constructor Details

MemoryStringWriter

public MemoryStringWriter()
Create a new character-stream writer whose critical sections will synchronize on the writer itself.

MemoryStringWriter

public MemoryStringWriter(int bufferSize)
Create a new character-stream writer whose critical sections will synchronize on the writer itself.

Method Details

close

public void close()
            throws IOException
Close the stream, flushing it first. Once a stream has been closed, further write() or flush() invocations will cause an IOException to be thrown. Closing a previously-closed stream, however, has no effect.

flush

public void flush()
            throws IOException
Flush the stream. If the stream has saved any characters from the various write() methods in a buffer, write them immediately to their intended destination. Then, if that destination is another character or byte stream, flush it. Thus one flush() invocation will flush all the buffers in a chain of Writers and OutputStreams.

If the intended destination of this stream is an abstraction provided by the underlying operating system, for example a file, then flushing the stream guarantees only that bytes previously written to the stream are passed to the operating system for writing; it does not guarantee that they are actually written to a physical device such as a disk drive.


toString

public String toString()

write

public void write(char[] cbuf,
                  int off,
                  int len)
            throws IOException
Write a portion of an array of characters.
Parameters:
cbuf - Array of characters
off - Offset from which to start writing characters
len - Number of characters to write