Redirecting log information

[Kevin Rushforth]

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
>>