Troubleshooting a Java Web Start application and accessing log files

Question

I am launching a Java Web Start application which shuts down abruptly. Does anybody know how to access the logs for Java Web Start. Are there any known reasons for it to shut down abruptly?

score 24 · Accepted Answer · edited May 24 '17 at 12:52

24

You should enable detailed trace logging as explained on this page. The same page gives you the location of the log files;

The trace file is saved into the log directory in the "Java Deployment Home" folder. That folder's location is specific to your operating system:

Windows XP: %HOME%\Application Data\Sun\Java\Deployment

Windows 7/Vista: %APPDATA%\..\LocalLow\Sun\Java\Deployment

Linux/Solaris: %HOME%/.java/deployment

edited May 24 '17 at 12:52

Erick Robertson

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answered Aug 16 '12 at 17:30

assylias

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for example mine is under: C:\Users\mostafa.sho\AppData\LocalLow\Sun\Java\Deployment\log and mostafa.sho is my username in windows. – mostafa.S Jan 18 '17 at 06:43

score 5 · Answer 2 · edited Jun 20 '18 at 15:52

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On my Windows 10 computer, the log file is found at:

C:\Users\<MY USER>\AppData\LocalLow\Sun\Java\Deployment\log

edited Jun 20 '18 at 15:52

pushkin

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answered Jun 20 '18 at 15:28

Aol

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Is there any guidance for OP regarding abrupt shutdowns you could offer? – gravity Jun 20 '18 at 15:35

pacman · Answer 3 · 2012-08-16T15:57:03.000

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I am not sure why it would fail like that but you should be able to see where the logs by going to File/Preferences/Advanced.

You should also be able to enable java console from the same location.

edited Aug 16 '12 at 15:57

answered Aug 16 '12 at 15:38

pacman

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score 0 · Answer 4 · edited Jul 27 '17 at 17:02

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Having -Xmx with a value too large was the cause of the issue for me.

Reducing the heap size resolved it.

edited Jul 27 '17 at 17:02

Nathan

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answered Sep 10 '15 at 08:23

Mzala

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score -1 · Answer 5 · edited May 23 '17 at 12:34

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Having the -XX:MaxPermSize defined in your JNLP file can cause this issue on Linux and Mac machines. Removing that argument from the JNLP seems to fix the issue.

Check this comment.

edited May 23 '17 at 12:34

Community

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answered Dec 17 '13 at 20:52

nhylated

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Also, using -Xmx with a value too large will make java fail to start. – Sarel Botha Dec 30 '13 at 14:33
@SarelBotha - That shouldn't ideally happen given that the system has sufficient free memory to accommodate the max-heap size. The issue that you faced can be because of different reasons though. For e.g. on Linux, JVM fails to start if the OS's or the shell's virtual memory limit is limited (check: http://looselytyped.blogspot.in/2014/08/java-jvm-initialization-errors-on-linux.html) – nhylated Aug 27 '14 at 10:15

score -1 · Answer 6 · answered Jan 22 '14 at 22:56

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Try clearing the Java temporary internet files folder which is found in the Java Control Panel / General tab. After doing this I was able to successfully relaunch my application through invoking the jnlp.

answered Jan 22 '14 at 22:56

jspring

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Troubleshooting a Java Web Start application and accessing log files

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