Re: a question about PrintWirter.

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#734

From: John
Date: Thu, 28 Nov 2002 16:02

41 lines
2158 bytes

The PrintWriter is buffered.  It will only flush itself when println()
is called and autoFlush is turned on (true).  There is a method called
flush() in which you can do the flushing yourself.

John


On Tue, 26 Nov 2002 17:55:49 +0100, "Zhilei Ma" <zhilei.ma@iao.fhg.de>
wrote:

>Hello all,
>
>i habe wrote a code piece like the following:
>
>import java.io.*;
>
>public class PrintWriterDemo
>{
>    public static void main(String[] args) throws IOException
>    {
> PrintWriter pw = new PrintWriter(System.out, false);
> pw.println("this is a String.");
>
> int i=-7;
> pw.println(i);
>
> double d = 2.4e-7;
> pw.println(d);
>    }
>}
>
>when i run this programm, it output nothing, until i changed the parameter
>of the constructor of PrintWriter from "false" to "true". I know that the
>boolean paremeter means that "autoFlush - A boolean; if true, the println()
>methods will flush the output buffer". But i cann't good understand it. Can
>anyone explain it to me?
>
>Thanks a lot!
>
>Zhilei
>

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From: John <cyllan@pobox.com>
Newsgroups: borland.public.jbuilder.java.api
Subject: Re: a question about PrintWirter.
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