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Message-ID: <211709bc0610190306j47d2696eje9b083033b819e97@mail.gmail.com>
Date: Thu, 19 Oct 2006 18:06:08 +0800
From: "Tony Wu" <wuyuehao@gmail.com>
To: harmony-dev@incubator.apache.org
Subject: Re: [classlib][kernel]A bug or non-bug difference?
In-Reply-To: <4d0b24970610190301o3662619crc7a8c573e8f92b7e@mail.gmail.com>
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References: <211709bc0610190029s4f4671dg15c2cea35d2ecbf6@mail.gmail.com>
	 <4d0b24970610190301o3662619crc7a8c573e8f92b7e@mail.gmail.com>

Hi all,
  please note that the Throwable is a kernel class. It comes with VME.

On 10/19/06, Andrew Zhang <zhanghuangzhu@gmail.com> wrote:
> On 10/19/06, Tony Wu <wuyuehao@gmail.com> wrote:
> >
> > I've tried Log4j on Harmony and found there are many failures caused
> > by one difference between RI and Harmony. The
> > Throwable.printStackTrace(PrintWriter) calls the *println* method of
> > PrinterWriter on RI whereas calls *print* twice(Obviously print
> > msssage then print a line separator) on Harmony. It will cause
> > different behavior when a user inherit the PrinterWriter and override
> > these two methods. Shall we fix it or leave as an non-bug difference?
>
>
> For this case, RI doesn't conflict with spec, and is reasonable, so I think
> we'd better follow RI.  Additionally, log4j has shown its dependency of this
> feature!
>
> refer to testcase below,
> >
> > public class TestThrow {
> >    public static void main(String[] args) {
> >        MyWriter mw = new MyWriter(System.out);
> >        Throwable throwable = new Exception("Just Testing");
> >        throwable.printStackTrace(mw);
> >    }
> > }
> > class MyWriter extends PrintWriter {
> >    public MyWriter(OutputStream out) {
> >        super(out);
> >    }
> >
> >    public void print(String s) {
> >        System.out.println("print");
> >    }
> >
> >    public void println(String s) {
> >        System.out.println("println");
> >    }
> > }
> > OUTPUTS:
> > RI
> > println
> > HARMONY
> > print
> > print
> >
> > --
> > Tony Wu
> > China Software Development Lab, IBM
> >
> > ---------------------------------------------------------------------
> > Terms of use : http://incubator.apache.org/harmony/mailing.html
> > To unsubscribe, e-mail: harmony-dev-unsubscribe@incubator.apache.org
> > For additional commands, e-mail: harmony-dev-help@incubator.apache.org
> >
> >
>
>
> --
> Best regards,
> Andrew Zhang
>
>


-- 
Tony Wu
China Software Development Lab, IBM

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