NPE in FileInfo.exists

[Frank-Michael Moser]

I'm desperate: almost the whole day I tried to find the reason for a NPE at
org.netbeans.modules.masterfs.filebasedfs.utils.FileInfo.exists(FileInfo.java:119). The full logfile
is attached.

I have a RCP application based on NB 6.1. I deployed it as ZIP to Mac OS X and Windows (on Mac
starting with the shell script launcher). Appearently the error from above only occurs on Mac OS X
(here Tiger). On Windows the same build seems to run fine.

I have investigated the problem a bit deeper and found this code at line 119 line in FileInfo:

> (FileChangedManager.getInstance().exists(getFile())) ? 1 : 0;

In FileChangedManager I found:

>    public static FileChangedManager getInstance() {
>         if (INSTANCE == null) {
>             Lookup.getDefault().lookup(SecurityManager.class);
>             assert INSTANCE != null;
>         }
>         return INSTANCE;
>     }

So obviously getInstance() returns null which triggers the NPE. Now in masterfs'
META-INF/services/java.lang.SecurityManager I found

> org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager

and finally in FileChangedManager

>     public FileChangedManager() {
>         INSTANCE = this;
>     }

which is the only place where the INSTANCE variable is written. Obviously the masterfs module was
already loaded (at least I think so because its classes are active).

So what's wrong here. Any pointers to a promising debugging strategy are highly appreciated.

Thanks,
Frank-Michael

INFO 2008-05-05 17:58:19 [org.netbeans.core.startup.TopLogging]:
  -------------------------------------------------------------------------------  
  >Log Session: Monday, May 5, 2008 5:58:19 PM CEST  
  >System Info:  
    Product Version         = Delta2D 200804211638  
    Operating System        = Mac OS X version 10.4.11 running on ppc  
    Java; VM; Vendor        = 1.5.0_13; Java HotSpot(TM) Client VM 1.5.0_13-121; Apple Computer, Inc.  
    Runtime                 = Java(TM) 2 Runtime Environment, Standard Edition 1.5.0_13-b05-241  
    Java Home               = /System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Home  
    System Locale; Encoding = de_DE (delta2d); MacRoman  
    Home Directory          = /Users/moser  
    Current Directory       = /Applications/DECODON/Delta2D/4.0  
    User Directory          = /Users/moser/.Delta2D  
    Installation            = /Applications/DECODON/Delta2D/4.0/delta2d  
                              /Applications/DECODON/Delta2D/4.0/decodon  
                              /Applications/DECODON/Delta2D/4.0/platform8  
    Boot & Ext. Classpath   = /System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Classes/classes.jar:/System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Classes/ui.jar:/System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Classes/laf.jar:/System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Classes/sunrsasign.jar:/System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Classes/jsse.jar:/System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Classes/jce.jar:/System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Classes/charsets.jar:/System/Library/Java/Extensions/CoreAudio.jar:/System/Library/Java/Extensions/dns_sd.jar:/System/Library/Java/Extensions/j3daudio.jar:/System/Library/Java/Extensions/j3dcore.jar:/System/Library/Java/Extensions/j3dsupport.jar:/System/Library/Java/Extensions/j3dutils.jar:/System/Library/Java/Extensions/jai_codec.jar:/System/Library/Java/Extensions/jai_core.jar:/System/Library/Java/Extensions/mlibwrapper_jai.jar:/System/Library/Java/Extensions/MRJToolkit.jar:/System/Library/Java/Extensions/QTJava.zip:/System/Library/Java/Extensions/vecmath.jar:/System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Home/lib/ext/apple_provider.jar:/System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Home/lib/ext/dnsns.jar:/System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Home/lib/ext/localedata.jar:/System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Home/lib/ext/sunjce_provider.jar:/System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Home/lib/ext/sunpkcs11.jar  
    Application Classpath   = /Applications/DECODON/Delta2D/4.0/platform8/lib/boot.jar:/Applications/DECODON/Delta2D/4.0/platform8/lib/org-openide-modules.jar:/Applications/DECODON/Delta2D/4.0/platform8/lib/org-openide-util.jar:/System/Library/Frameworks/JavaVM.framework/Versions/1.5/Home/lib/dt.jar:/System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Classes/.compatibility/14compatibility.jar  
    Startup Classpath       = /Applications/DECODON/Delta2D/4.0/platform8/core/core.jar:/Applications/DECODON/Delta2D/4.0/platform8/core/org-openide-filesystems.jar:/Applications/DECODON/Delta2D/4.0/Delta2D.app/Contents/MacOS/../../../bin/../delta2d/core/locale/core_delta2d.jar  
  -------------------------------------------------------------------------------  
INFO 2008-05-05 17:58:23 [org.netbeans.core.startup.NbEvents]: Turning on modules:
INFO 2008-05-05 17:58:23 [org.netbeans.core.startup.NbEvents]:
  org.openide.util [7.12.0.1 1 200804211638]  
  org.openide.modules [7.6 200804211638]  
  org.openide.awt [7.1.0.1 200804211638]  
  org.netbeans.api.progress/1 [1.11.0.1 1 200804211638]  
  org.jdesktop.layout/1 [1.5 1.0.3 200804211638]  
  org.openide.dialogs [7.6 200804211638]  
  org.openide.nodes [7.3.0.1 200804211638]  
  com.decodon.modules.context [1.0 080430]  
  org.openide.filesystems [7.8 200804211638]  
  org.netbeans.modules.queries/1 [1.12 200804211638]  
  org.netbeans.modules.masterfs/2 [2.14 200804211638]  
  com.decodon.modules.scripting [1.0 080430]  
  javax.media.jai [1.0 080430]  
  com.install4j.runtime [1.0 080430]  
  javax.media.j3d [1.0 080430]  
  com.decodon.libs.misc [1.0 080430]  
  com.decodon.modules.windows [1.0 080430]  
  com.decodon.apps.delta2d [1.0 080430]  
  com.decodon.modules.delta2d.nodes [1.0 080505]  
  org.openide.windows [6.20 200804211638]  
  org.netbeans.modules.editor.mimelookup/1 [1.9 200804211638]  
  org.openide.text [6.18 200804211638]  
  org.openide.explorer [6.13 1 200804211638]  
  org.openide.actions [6.7.0.1 200804211638]  
  org.openide.loaders [6.9 200804211638]  
  org.netbeans.libs.jsr223/1 [1.7 6 200804211638]  
  org.netbeans.modules.templates [1.2 200804211638]  
  com.decodon.libs.beanshell [1.0 080430]  
  org.netbeans.modules.editor.mimelookup.impl/1 [1.2 200804211638]  
  com.decodon.modules.delta2d.contextbridge [1.0 080505]  
  org.netbeans.bootstrap/1 [2.11 200804211638]  
  org.netbeans.modules.options.api/1 [1.6 200804211638]  
  org.netbeans.core.startup/1 [1.12.0.1 200804211638]  
  org.netbeans.swing.plaf [1.7 200804211638]  
  org.openide.io [1.12 200804211638]  
  org.netbeans.core/2 [3.7.0.1 200804211638]  
  org.netbeans.modules.settings/1 [1.14 200804211638]  
  org.netbeans.modules.autoupdate.services [1.4 200804211638]  
  org.netbeans.modules.autoupdate.ui [1.4 200804211638]  
  org.netbeans.modules.favorites/1 [1.13 200804211638]  
  org.netbeans.modules.progress.ui [1.1 200804211638]  
  com.decodon.modules.delta2d [1.0 080505]  
  org.netbeans.core.ui/1 [1.11 200804211638]  
  org.netbeans.swing.tabcontrol [1.11 200804211638]  
  org.netbeans.core.windows/2 [2.10.0.1 200804211638]  
  org.netbeans.modules.options.keymap [1.3 200804211638]  
  org.netbeans.modules.core.kit [1.1 200804211638]  
  org.netbeans.libs.jna/1 [1.0 200804211638]  
  org.jdesktop.swingx [1.0 080430]  
  org.netbeans.modules.applemenu/1 [1.8 200804211638]  
  org.netbeans.api.visual [2.10 200804211638]  
  com.decodon.libs.jruby [1.0 080430]  
  com.decodon.modules.io [1.0 080430]  
  com.decodon.modules.workflow [1.0 080505]  
  com.decodon.modules.lighttable [1.0 080505]  
  org.netbeans.core.nativeaccess/1 [1.0 200804211638]  
  org.netbeans.core.output2/1 [1.9.0.1 1 200804211638]  
INFO 2008-05-05 17:58:25 [com.decodon.util.logging.LoggingConfig]: Product: DECODON Delta2D 4.0 Beta 09 (20080424)
INFO 2008-05-05 17:58:26 [global]: Loaded application properties /Applications/DECODON/Delta2D/4.0/Delta2D.ini
INFO 2008-05-05 17:58:26 [global]: Loaded application properties /Users/moser/.Delta2D/Delta2D.ini
INFO 2008-05-05 17:58:26 [global]:
  Could not set L&F Mac OS X Aqua  
  Thread AWT-EventQueue-1: Mac OS X Aqua: Will not load classes from default package (Mac OS X Aqua)
javax.swing.UnsupportedLookAndFeelException: Mac OS X Aqua: Will not load classes from default package (Mac OS X Aqua)
        at com.decodon.swing.plaf.LookAndFeelFactory.createLookAndFeel(LookAndFeelFactory.java:352)
        at com.decodon.swing.plaf.LookAndFeelFactory.setCurrentLookAndFeel(LookAndFeelFactory.java:239)
[catch] at com.decodon.swing.plaf.LookAndFeelFactory.initDefaultLookAndFeel(LookAndFeelFactory.java:192)
        at com.decodon.awt.UIProperties.initDefaultUI(UIProperties.java:179)
        at com.decodon.awt.UIProperties.initDefaultUI(UIProperties.java:169)
        at com.decodon.apps.delta2d.Delta2DProperties.<clinit>(Delta2DProperties.java:177)
        at com.decodon.Delta2D.<init>(Delta2D.java:69)
        at com.decodon.Delta2D.main(Delta2D.java:122)
        at com.decodon.modules.delta2d.startup.Installer$1.run(Installer.java:29)
        at org.netbeans.core.windows.WindowManagerImpl$Exclusive.run(WindowManagerImpl.java:1298)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:176)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
INFO 2008-05-05 17:58:27 [org.netbeans.core.ui.warmup.DiagnosticTask]:
  Diagnostic information  
  Input arguments:  
  -Djdk.home=/System/Library/Frameworks/JavaVM.framework/Versions/1.5/Home  
  -Dnetbeans.system_http_proxy=DIRECT  
  -Dnetbeans.system_http_non_proxy_hosts=  
  -Dnetbeans.dirs=/Applications/DECODON/Delta2D/4.0/Delta2D.app/Contents/MacOS/../../../bin/../delta2d:/Applications/DECODON/Delta2D/4.0/Delta2D.app/Contents/MacOS/../../../bin/../decodon:  
  -Dnetbeans.home=/Applications/DECODON/Delta2D/4.0/platform8  
  -Dcom.apple.mrj.application.apple.menu.about.name=Delta2D  
  -Xms24m  
  -Xmx513M  
  Compiler: HotSpot Client Compiler  
  Heap memory usage: initial 24.0MB maximum 508.3MB  
  Non heap memory usage: initial 28.2MB maximum 116.0MB  
  Garbage collector: Copy (Collections=27 Total time spent=0s)  
  Garbage collector: MarkSweepCompact (Collections=0 Total time spent=0s)  
  Classes: loaded=4058 total loaded=4058 unloaded 0  
INFO 2008-05-05 17:58:27 [org.netbeans.core.ui.warmup.DiagnosticTask]: Total memory 1,342,177,280
INFO 2008-05-05 17:58:27 [null]: Total physical memory 1,342,177,280
WARNING 2008-05-05 17:58:27 [org.openide.filesystems.Ordering] Ordering getOrder:
  Not all children in Menu/Edit/ marked with the position attribute: [Separator3.instance], but some are: [org-openide-actions-UndoAction.instance, org-openide-actions-RedoAction.instance, Separator1.instance, Separator2.instance]
WARNING 2008-05-05 17:58:28 [org.openide.filesystems.Ordering] Ordering getOrder:
  Not all children in Menu/Window/ marked with the position attribute: [ExplorerAction.shadow], but some are: [ProjectManagerAction.shadow, DualViewAction.shadow, QuantitationTableAction.shadow, ColorCodingAction.shadow, ExpressionProfilesAction.shadow, GelImageRegionsAction.shadow, JobManagerAction.shadow, WorkflowAction.shadow, LightTableAction.shadow, WarpingSetupAction.shadow, Separator1.instance, SwitchToRecentDocumentAction.shadow, ProgressListAction.shadow, Separator3.instance, CloseWindowAction.shadow, MaximizeWindowAction.shadow, org-netbeans-core-windows-actions-UndockAction.shadow, Separator4.instance, CloneDocumentAction.shadow, CloseAllDocumentsAction.shadow, CloseAllButThisAction.shadow, DocumentsAction.shadow, Separator5.instance, org-netbeans-core-windows-actions-ResetWindowsAction.instance]
SEVERE 2008-05-05 17:58:59 [org.openide.util.RequestProcessor] RequestProcessor$Processor doNotify
java.lang.NullPointerException
        at org.netbeans.modules.masterfs.filebasedfs.utils.FileInfo.exists(FileInfo.java:119)
        at org.netbeans.modules.masterfs.filebasedfs.utils.FileInfo.isConvertibleToFileObject(FileInfo.java:175)
        at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectFactory.getInstance(FileObjectFactory.java:111)
        at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectFactory.getInstance(FileObjectFactory.java:99)
        at org.netbeans.modules.masterfs.filebasedfs.FileBasedFileSystem.<init>(FileBasedFileSystem.java:82)
        at org.netbeans.modules.masterfs.filebasedfs.FileBasedFileSystem.<clinit>(FileBasedFileSystem.java:72)
Caused: java.lang.ExceptionInInitializerError
        at org.netbeans.modules.masterfs.filebasedfs.FileBasedURLMapper.getFileObjects(FileBasedURLMapper.java:129)
        at org.netbeans.modules.masterfs.MasterURLMapper.getFileObjects(MasterURLMapper.java:61)
        at org.openide.filesystems.URLMapper.findFileObject(URLMapper.java:213)
        at org.openide.filesystems.FileUtil.toFileObject(FileUtil.java:669)
        at org.openide.filesystems.FileUtil.getDiskFileSystemFor(FileUtil.java:131)
        at org.openide.filesystems.FileUtil.refreshFor(FileUtil.java:151)
        at org.openide.filesystems.FileUtil.refreshAll(FileUtil.java:167)
        at org.netbeans.core.ui.warmup.MenuWarmUpTask$NbWindowsAdapter.run(MenuWarmUpTask.java:143)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986)
SEVERE 2008-05-05 18:00:15 [org.openide.util.RequestProcessor] RequestProcessor$Processor doNotify
java.lang.NoClassDefFoundError
        at org.netbeans.modules.masterfs.filebasedfs.FileBasedURLMapper.getFileObjects(FileBasedURLMapper.java:129)
        at org.netbeans.modules.masterfs.MasterURLMapper.getFileObjects(MasterURLMapper.java:61)
        at org.openide.filesystems.URLMapper.findFileObject(URLMapper.java:213)
        at org.openide.filesystems.FileUtil.toFileObject(FileUtil.java:669)
        at org.openide.filesystems.FileUtil.getDiskFileSystemFor(FileUtil.java:131)
        at org.openide.filesystems.FileUtil.refreshFor(FileUtil.java:151)
        at org.openide.filesystems.FileUtil.refreshAll(FileUtil.java:167)
        at org.netbeans.core.ui.warmup.MenuWarmUpTask$NbWindowsAdapter.run(MenuWarmUpTask.java:143)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986)
SEVERE 2008-05-05 18:01:06 [org.openide.util.RequestProcessor] RequestProcessor$Processor doNotify
java.lang.NoClassDefFoundError
        at org.netbeans.modules.masterfs.filebasedfs.FileBasedURLMapper.getFileObjects(FileBasedURLMapper.java:129)
        at org.netbeans.modules.masterfs.MasterURLMapper.getFileObjects(MasterURLMapper.java:61)
        at org.openide.filesystems.URLMapper.findFileObject(URLMapper.java:213)
        at org.openide.filesystems.FileUtil.toFileObject(FileUtil.java:669)
        at org.openide.filesystems.FileUtil.getDiskFileSystemFor(FileUtil.java:131)
        at org.openide.filesystems.FileUtil.refreshFor(FileUtil.java:151)
        at org.openide.filesystems.FileUtil.refreshAll(FileUtil.java:167)
        at org.netbeans.core.ui.warmup.MenuWarmUpTask$NbWindowsAdapter.run(MenuWarmUpTask.java:143)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986)

[Joe Gatewood]

Frank,

Which JRE are you using?

I just got bit by tiger myself.  I did my development with NB 6.1 and JRE
1.6 on Vista and Linux Etch.  Tiger only supports 1.5.  I had to upgrade to
leopard (Mac OS 10.5) to get the 1.6 JRE and then all was well.  I do not
know if your error is a 1.5 vs 1.6 problem but beware of the limitations
with tiger.

Joe


-----Original Message-----
From: news [mailto:news@...] On Behalf Of Frank-Michael Moser
Sent: Monday, May 05, 2008 12:43 PM
To: dev@...
Subject: [openide-dev] NPE in FileInfo.exists

I'm desperate: almost the whole day I tried to find the reason for a NPE at
org.netbeans.modules.masterfs.filebasedfs.utils.FileInfo.exists(FileInfo.jav
a:119). The full logfile
is attached.

I have a RCP application based on NB 6.1. I deployed it as ZIP to Mac OS X
and Windows (on Mac
starting with the shell script launcher). Appearently the error from above
only occurs on Mac OS X
(here Tiger). On Windows the same build seems to run fine.

I have investigated the problem a bit deeper and found this code at line 119
line in FileInfo:

> (FileChangedManager.getInstance().exists(getFile())) ? 1 : 0;

In FileChangedManager I found:

>    public static FileChangedManager getInstance() {
>         if (INSTANCE == null) {
>             Lookup.getDefault().lookup(SecurityManager.class);
>             assert INSTANCE != null;
>         }
>         return INSTANCE;
>     }

So obviously getInstance() returns null which triggers the NPE. Now in
masterfs'
META-INF/services/java.lang.SecurityManager I found

> org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager

and finally in FileChangedManager

>     public FileChangedManager() {
>         INSTANCE = this;
>     }

which is the only place where the INSTANCE variable is written. Obviously
the masterfs module was
already loaded (at least I think so because its classes are active).

So what's wrong here. Any pointers to a promising debugging strategy are
highly appreciated.

Thanks,
Frank-Michael

[Frank-Michael Moser]

Joe Gatewood wrote:
> Frank,
>
> Which JRE are you using?

java version "1.5.0_13"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_13-b05-241)
Java HotSpot(TM) Client VM (build 1.5.0_13-121, mixed mode, sharing)

> I just got bit by tiger myself.  I did my development with NB 6.1 and JRE
> 1.6 on Vista and Linux Etch.  Tiger only supports 1.5.  I had to upgrade to
> leopard (Mac OS 10.5) to get the 1.6 JRE and then all was well.  

So you experienced the same problem with Java 1.5 on Tiger and the problem went away after upgrading
to Leopard with Java 1.6, did it?

> I do not know if your error is a 1.5 vs 1.6 problem but beware of the
> limitations with tiger.

I have payed much attention to allow running my application on Tiger with Java 1.5.

Thanks for your  comments,
Frank-Michael

[Joe Gatewood]

Frank,

I can not say the problem was the same.  I was trying to get ready for a
trade show when I discovered the problem and had to frantically search for a
solution.  If you have 1.5 for Windows you might try that JRE and see if you
reproduce the error on your windows machine.

Good luck,
Joe


-----Original Message-----
From: news [mailto:news@...] On Behalf Of Frank-Michael Moser
Sent: Tuesday, May 06, 2008 1:51 AM
To: dev@...
Subject: [openide-dev] Re: NPE in FileInfo.exists

Joe Gatewood wrote:
> Frank,
>
> Which JRE are you using?

java version "1.5.0_13"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_13-b05-241)
Java HotSpot(TM) Client VM (build 1.5.0_13-121, mixed mode, sharing)

> I just got bit by tiger myself.  I did my development with NB 6.1 and JRE
> 1.6 on Vista and Linux Etch.  Tiger only supports 1.5.  I had to upgrade
to
> leopard (Mac OS 10.5) to get the 1.6 JRE and then all was well.  

So you experienced the same problem with Java 1.5 on Tiger and the problem
went away after upgrading
to Leopard with Java 1.6, did it?

> I do not know if your error is a 1.5 vs 1.6 problem but beware of the
> limitations with tiger.

I have payed much attention to allow running my application on Tiger with
Java 1.5.

Thanks for your  comments,
Frank-Michael

[Frank-Michael Moser]

Now I have a similar problem under Windows with Java 1.6:

> java.lang.AssertionError
> at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.getInstance(FileChangedManager.java:67)
> at org.netbeans.modules.masterfs.filebasedfs.utils.FileInfo.exists(FileInfo.java:119)
> at org.netbeans.modules.masterfs.filebasedfs.utils.FileInfo.isConvertibleToFileObject(FileInfo.java:175)
> at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectFactory.getInstance(FileObjectFactory.java:111)
> at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectFactory.getInstance(FileObjectFactory.java:99)
> at org.netbeans.modules.masterfs.filebasedfs.FileBasedFileSystem.getFileObject(FileBasedFileSystem.java:128)
> at org.netbeans.modules.masterfs.filebasedfs.FileBasedURLMapper.getFileObjects(FileBasedURLMapper.java:129)
> at org.netbeans.modules.masterfs.MasterURLMapper.getFileObjects(MasterURLMapper.java:61)
> at org.openide.filesystems.URLMapper.findFileObject(URLMapper.java:213)
> at org.openide.filesystems.FileUtil.toFileObject(FileUtil.java:669)
> at org.openide.filesystems.FileUtil.getDiskFileSystemFor(FileUtil.java:131)
> at org.openide.filesystems.FileUtil.refreshFor(FileUtil.java:151)
> at org.openide.filesystems.FileUtil.refreshAll(FileUtil.java:167)
> at org.netbeans.core.ui.warmup.MenuWarmUpTask$NbWindowsAdapter.run(MenuWarmUpTask.java:143)
> at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561)
> [catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986)

Please help, I do not understand, how this situation (as described in the initial email) is possible
at all: in short, the masterfs module (obviously) is loaded, but
org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager which is registered in masterfs'
META-INF/services/java.lang.SecurityManager is not found in lookup as
Lookup.getDefault().lookup(SecurityManager.class).

What's wrong here?

Frank-Michael


Joe Gatewood wrote:

> Frank,
>
> I can not say the problem was the same.  I was trying to get ready for a
> trade show when I discovered the problem and had to frantically search for a
> solution.  If you have 1.5 for Windows you might try that JRE and see if you
> reproduce the error on your windows machine.
>
> Good luck,
> Joe
>
>
> -----Original Message-----
> From: news [mailto:news@...] On Behalf Of Frank-Michael Moser
> Sent: Tuesday, May 06, 2008 1:51 AM
> To: dev@...
> Subject: [openide-dev] Re: NPE in FileInfo.exists
>
> Joe Gatewood wrote:
>> Frank,
>>
>> Which JRE are you using?
>
> java version "1.5.0_13"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_13-b05-241)
> Java HotSpot(TM) Client VM (build 1.5.0_13-121, mixed mode, sharing)
>
>> I just got bit by tiger myself.  I did my development with NB 6.1 and JRE
>> 1.6 on Vista and Linux Etch.  Tiger only supports 1.5.  I had to upgrade
> to
>> leopard (Mac OS 10.5) to get the 1.6 JRE and then all was well.  
>
> So you experienced the same problem with Java 1.5 on Tiger and the problem
> went away after upgrading
> to Leopard with Java 1.6, did it?
>
>> I do not know if your error is a 1.5 vs 1.6 problem but beware of the
>> limitations with tiger.
>
> I have payed much attention to allow running my application on Tiger with
> Java 1.5.
>
> Thanks for your  comments,
> Frank-Michael
>
>

[Frank-Michael Moser]

>
> Please help, I do not understand, how this situation (as described in
> the initial email) is possible at all: in short, the masterfs module
> (obviously) is loaded, but
> org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager which
> is registered in masterfs' META-INF/services/java.lang.SecurityManager
> is not found in lookup as
> Lookup.getDefault().lookup(SecurityManager.class).
>
> What's wrong here?

I got it. I'm using a custom SecurityManager which did not grant the permission to create other
securitymanagers. Unfortunatly I did not find any entry about this in the log file. However, now
granting that permission everything works fine.

Frank-Michael