openjdk team mailing list archive

["Damien Raude-Morvan" <drazzib@xxxxxxxxxxx>]

Hi,

Le lundi 25 juin 2012 23:34:39, Erich Schubert a écrit :
> Certain actions (I'm no sure which one, I havn't been able to reproduce
> them reliably) will cause this message to be printed.  This does not
> happen with OpenJDK6, and it did not happen in Sun Java6.
> I've seen them occur in multiple applications, for example in current
> MediathekView, from http://zdfmediathk.sourceforge.net/

I've been unable to reproduce this reliably... Did this append often with 
MediathekView ?

> See also:
> http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7130140
> http://hg.openjdk.java.net/jdk7/2d/jdk/diff/3b9a288d7ddb/src/share/classes/
> java/awt/event/MouseEvent.java So it is indeed a OpenJDK string, and not an
> application string.
> And clearly, this class should not be using System.out.println, but instead
> use the logging API.

I fully agree with you : System.out usage in java.* packages should be reduced 
to a strict minimum.

> According to the bug report, it should happen in any applications when
> using mouse scroll. I could not reproduce it again right now, not as
> easily. But I did not try the mentioned example from the bug. It seems
> that this has been partially fixed, but there are still situations where
> it occurs.
> It should be trackable down using the unqiue string easily (and it probably
> is in MouseEvent.java)
> 
> This is a related JDK8 changeset:
> http://hg.openjdk.java.net/jdk8/awt/jdk/rev/19431d07bc19
> 
> But I do not get OpenJDK Mecurial, I'm unable to find out where to see the
> current JDK source. Most of the stuff is last modified 4 years ago.
> The SCM is completely inaccessible to outsiders, and I was unable to find
> what the changelog of MouseEvent.java for OpenJDK7 is.
> If above patch applies to the current JDK7, it should be a no-brainer to
> add.

Here is link to upstream JDK7 / JDK8 :
http://hg.openjdk.java.net/jdk7u/jdk7u-
dev/jdk/log/tip/src/share/classes/java/awt/event/MouseEvent.java
http://hg.openjdk.java.net/jdk8/jdk8/jdk/log/tip/src/share/classes/java/awt/event/MouseEvent.java

=> It's only fixed in JDK8 and not in recent update of JDK7.

> While for me this bug is a mere annoyance, "System.out.println" inside AWT
> is bound to cause some true bugs in other applications.

I'm not sure this warrant a specific fix : there is lots of other System.out 
usage in JDK and this is just annoyance...

Cheers,
-- 
Damien