On 10/19/06, Tony Wu <[EMAIL PROTECTED]> wrote:
Hi all,
please note that the Throwable is a kernel class. It comes with VME.
Then let's report it as IBM VME bug. (Oliver should be interested?)
I checked DRLVM Throwable#printStackTrace(PrintStream) implementation[1].
It's ok and prints "println" as well. So we needn't fix anything here. :)
[1]
public void printStackTrace(PrintStream ps) {
ps.println(makeThrowableString());
}
On 10/19/06, Andrew Zhang <[EMAIL PROTECTED]> wrote:
> On 10/19/06, Tony Wu <[EMAIL PROTECTED]> 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: [EMAIL PROTECTED]
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> >
> >
>
>
> --
> Best regards,
> Andrew Zhang
>
>
--
Tony Wu
China Software Development Lab, IBM
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Best regards,
Andrew Zhang
