Redirecting log information

[Richard Bair]

Ya, both JDK logging and JFX logging have the same flag checks available.

On May 8, 2012, at 9:06 AM, Phil Race <philip.race at oracle.com> wrote:

> I think the graphics code mostly if not always, guards those printlns with a check for
> a debugging flag. Unless used in a similar manner, the logging API carries overhead.
> There was a fix in JDK 7 to eliminate dependency on logging from AWT/2D/Swing.
> In part that was because of modularisation .. I don't know the full story on why
> that mattered.
> 
> http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6879044 :
> Eliminate the dependency on logging from the AWT/2D/Swing classes
> 
> -phil.
> 
> On 5/8/2012 8:28 AM, Kevin Rushforth wrote:
>> This would certainly make everyone's life easier.
>> 
>> In any case, library code should never write debug/warning/error meesages to System.out / stdout (and yes, I know that some of the graphics currently does). Best is to use logging where possible for the reasons Richard mentioned, and System.err / stderr where not.
>> 
>> -- Kevin
>> 
>> 
>> Richard Bair wrote:
>>> Not all JavaFx code is consistent on logging. In particular, the graphics code just uses System.out and System.err, whereas controls use a Logger which goes to System.out unless you enable JDK logging, in which case it uses a JDK Logger.
>>> 
>>> I feel we ought to use the same logging method consistently, and then it should be quite easy for you to redirect by utilizing the JDK logging mechanism?
>>> 
>>> On May 8, 2012, at 5:19 AM, Tom Schindl <tom.schindl at bestsolution.at> wrote:
>>> 
>>>> Hi,
>>>> 
>>>> The problem is the point at which one redirects the stderr. Take a look
>>>> at this:
>>>> 
>>>>> public class TestApp extends Application {
>>>>> 
>>>>>   @Override
>>>>>   public void start(Stage primaryStage) {
>>>>>       ByteArrayOutputStream out = new ByteArrayOutputStream();
>>>>>       PrintStream orig = System.err;
>>>>>       System.setErr(new PrintStream(out)); // Works
>>>> vs.
>>>> 
>>>>> public class TestApp extends Application {
>>>>> 
>>>>>   @Override
>>>>>   public void start(Stage primaryStage) {
>>>>>       ByteArrayOutputStream out = new ByteArrayOutputStream();
>>>>>       PrintStream orig = System.err;
>>>>>              Group g = new Group();
>>>>>       System.setErr(new PrintStream(out)); // Does not work
>>>> The problem is that Option 1 is not possible for me because I only have
>>>> to redirect the logging information from JavaFX while your solution
>>>> completely redirects STDERR with is not making much sense!
>>>> 
>>>> Sad enough the Logging code is not yet opensourced so I still hope that
>>>> a JavaFX dev with access to the code can help me.
>>>> 
>>>> So I repeat my question. Can I somehow set a custom logger to the JavaFX
>>>> platform?
>>>> 
>>>> Tom
>>>> 
>>>> Am 08.05.12 00:22, schrieb Tom Schindl:
>>>>> I've tried that already and couldn't make it work. Did you try it and it
>>>>> worked? Then I'd give another try.
>>>>> 
>>>>> Tom
>>>>> 
>>>>> Am 08.05.12 00:25, schrieb Christian Schudt:
>>>>>> You can redirect the System.err stream to your logger.
>>>>>> 
>>>>>> See here:
>>>>>> 
>>>>>> https://forums.oracle.com/forums/thread.jspa?messageID=10304321
>>>>>> http://stackoverflow.com/questions/1200175/log4j-redirect-stdout-to-dailyrollingfileappender/1370033#1370033 
>>>>>> 
>>>>>> Christian
>>>>>> 
>>>>>> 
>>>>>> Am 07.05.2012 um 23:06 schrieb Tom Schindl:
>>>>>> 
>>>>>>> Hi,
>>>>>>> 
>>>>>>> I'm having a hard time redirecting log output generated by JavaFX
>>>>>>> library. Is there some API available or documentation?
>>>>>>> 
>>>>>>> Tom
>>>>>>> 
>>>>>>> -- 
>>>>>>> B e s t S o l u t i o n . a t                        EDV Systemhaus GmbH
>>>>>>> ------------------------------------------------------------------------ 
>>>>>>> tom schindl                 geschäftsführer/CEO
>>>>>>> ------------------------------------------------------------------------ 
>>>>>>> eduard-bodem-gasse 5-7/1   A-6020 innsbruck     fax      ++43 512 935833
>>>>>>> http://www.BestSolution.at                      phone    ++43 512 935834
>>>> -- 
>>>> B e s t S o l u t i o n . a t                        EDV Systemhaus GmbH
>>>> ------------------------------------------------------------------------ 
>>>> tom schindl                 geschäftsführer/CEO
>>>> ------------------------------------------------------------------------ 
>>>> eduard-bodem-gasse 5-7/1   A-6020 innsbruck     fax      ++43 512 935833
>>>> http://www.BestSolution.at                      phone    ++43 512 935834
>