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See also 105358 for form and java source IDE is hanging when double-click on .java file (matisse form) in Project I'm attaching some thread dumps.
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I believe that what is wrong is I edited a bundle.properties file changed some keys but the form file referred to the keys I changed. Attached is the file I tried to open and bundle.properties
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Created attachment 43101 [details] bundle.properties
According to the thread dumps it seems the problem is in constructing the classpath for looking for the properties file, more precisely in finding sources for the execution classpath entries. This happens when the properties file is not found in the projects own sources. Have you moved the GUI form between projects? It seems it is just terribly slow - at least according to the thread dumps there is no deadlock, and it looks like you've taken them during 12 minutes... I have no idea why it is so slow - obviously it must open some projects to determine the sources, but 12 minutes is really too much. I've tried to simulate this situation in another module - i.e. put an invalid name of properties file into a form, but it loaded quickly without problems (just marked the invalid i18n value). So I think I need to reproduce it in the same module (source tree) as you did to really do the same thing. Could you point me to what sources I need to checkout from where, etc?
So I copied the BrokenDatabaseAlertPanel form (which refers to non-existing properties file) into the current sources of Data Sources project (according to the package name) and opened it in M9. It showed missing strings, but that's fine. I restarted the IDE with the form opened - it came up without problems. No crash, no out of memory error. So it seems something else must be the culprit - maybe too many opened projects causing lack of memory right after the startup?
open the following modules from NB 6 trunk: Database Explorer (db module) J2EE Project Support Utilities (j2ee/utilities) JSF Project Core (visualweb/project/jsf) Web Projects (web/project) unzip the attached zip file and open (visualweb/dataconnectivity) then try opening the files (Design View): dataconnectivity/src/org/netbeans/modules/visualweb/dataconnectivity/ui/BrokenDatabaseAlertPanel.java dataconnectivity/src/org/netbeans/modules/visualweb/dataconnectivity/ui/NoSelectedDatabaseConnectionWarning.java
Created attachment 43276 [details] module with forms to help reproduce
Tried, but still works fine for me... I'd say the GUI builder is not involved in this, the cause is likely something else. Actually it seems it is the same problem as described in issue 105776 (105234), the symptoms are very similar. *** This issue has been marked as a duplicate of 105234 ***