Exception not catched when closing dialog

Hi,
When I close one of my dialog (JDialog), this exception is raised. None of
the classes from Exception trace are mine (they are all from javax or java)
. How can I catch or avoid this exception??
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
    at javax.swing.plaf.basic.BasicTreeUI.isToggleEvent(BasicTreeUI.java:2192)
    at javax.swing.plaf.basic.BasicTreeUI.selectPathForEvent
(BasicTreeUI.java:2247)
    at javax.swing.plaf.basic.BasicTreeUI$Handler.handleSelection
(BasicTreeUI.java:3432)
    at javax.swing.plaf.basic.BasicTreeUI$Handler.mousePressed
(BasicTreeUI.java:3393)
    at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:222)
    at java.awt.Component.processMouseEvent(Component.java:5485)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3093)
    at java.awt.Component.processEvent(Component.java:5253)
    at java.awt.Container.processEvent(Container.java:1966)
    at java.awt.Component.dispatchEventImpl(Component.java:3955)
    at java.awt.Container.dispatchEventImpl(Container.java:2024)
    at java.awt.Component.dispatchEvent(Component.java:3803)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3889)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
    at java.awt.Container.dispatchEventImpl(Container.java:2010)
    at java.awt.Window.dispatchEventImpl(Window.java:1766)
    at java.awt.Component.dispatchEvent(Component.java:3803)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
    at java.awt.EventDispatchThread.pumpOneEventForHierarchy
(EventDispatchThread.java:234)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy
(EventDispatchThread.java:163)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)Thanks,
Marie

Hey,
I doubt this stack trace is gonna be much help to anyone.
Are you performing any clean up operations when you close your dialog.?
You may well be, at any point in the dialog's life time, setting some field or value of a default Swing class to null. Or inadvertently passing a variable that evaluates to null, although it may not appear to you that it is in fact null.
I fear you will have to start from the beginning of your code and analyse all the setXxxx() methods you call and be sure you are not in one-way-or-another passing any null values.
For some methods null parameters maybe legal. However if that value is retreived by some other class and used but can not handle null values it will throw the exception.
Imagine you set a JTable to use a grid of values litered with null values. It may not complain (I dont actually know). But if you have some logic that cannot handle null yet uses any arbitrary table value, at some point it will break.
The best thing I could say is check what data is going in and out of you JTree. Also, you can examine the source code.
If you can, post your dialog with any supporting data so that it can be run via a main method.
Good luck,
Darren

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<?xml version='1.0' encoding='windows-1252'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.1"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:af="http://xmlns.oracle.com/adf/faces/rich">
<jsp:directive.page contentType="text/html;charset=windows-1252"/>
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<af:form id="f1">
<af:panelStretchLayout startWidth="0px" endWidth="0px" topHeight="30px"
bottomHeight="30px" styleClass="AFVisualRoot"
id="pt_psl1">
<f:facet name="top">

</f:facet>
<f:facet name="center">
<af:inlineFrame shortDesc="#{res['report.title']}" id="if1"
source="/pdf/report.pdf"/>
</f:facet>
</af:panelStretchLayout>
</af:form>
</af:document>
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</jsp:root>
I tested by putting a button into my report page to close the page and containing a returnActionListener tag and when I close the page with this button, everything is fine.
<af:commandButton text="" id="close"
partialSubmit="true" visible="true"
immediate="true">
<af:returnActionListener/>
</af:commandButton>
Is this normal?
My problem is that our users are used to close the dialog using 'X' button so it is a 'must' for me to make it work.
Is this normal? OR Am i doing something wrong there?
I spent a full week looking for mistakes and searching into the net but I'm lost there
Any help welcome! :)
Jack

Hi Puthanampatti,
That's what I thought and I did try to do what you said:
I added this into my report page:
<f:facet name="metaContainer">
<af:resource type="javascript">
window.onbeforeunload = simulateClick;
function simulateClick() {
if (document.getElementById('close') != null) {
// simulate a click
//alert('simulate a click');
document.getElementById('close').click();
//alert('CLICKED');
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</f:facet>
And here my close button into report page:
<af:commandButton text="#{res['template.null']}" id="close"
partialSubmit="true" visible="true"
clientComponent="true" immediate="true">
<af:returnActionListener/>
</af:commandButton>
But, this doesn't resolve the problem.
When doing so, I have this javascript error:
Erreur : AdfXMLRequest is not defined
Fichier Source : http://127.0.0.1:7101/payroll/afr/partition/gecko/default/opt/core-11.1.1.3.0-0084.js
Ligne : 457
SO now I'm quite lost and dunno what to do next.
I am 99% sure it was working well when I was developing with JDev11.1.1.2.
Is it not a regression?
Jack

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I have a macbook pro 8.2. When I close the led, it sleeps then wakes up immediately. I can't put it to sleep by closing the led becaus it will wakes up again. So, If I want to put it to sleep, I have to choose the sleep option from apple menu. I am affraid that it is a hardware problem, something wrong in the sensors.

Since this is a 8.2 MBP it is fairly new, I have an 8.2, it has still got a lot of the original 1 year warranty left on it.
Just how do you know it is not going to sleep when you close the lid? Does the monitor not turn off? Does the sleep light on the front not come one and then slowly go out and come on again (flash slowly) when you close the lid?
If the screen doesn't turn off or the sleep light doesn't come on and then flash slowly you need to take it in to get it fixed ASAP.
If those things are happening, the screen turns off and the sleep light comes on then goes out then back on slowly, the MBP is actually in sleep mode. Even if once you open the lid it comes right back to life wvwn if it doesn't ask for your password. This is a setting in system preferences.

Customization for Firefox 29 not staying when closing and reopening firefox

The only add-on I have added in an attempt to get this new version of firefox to not look so much like a crowded mess is Classic Theme Restorer. My problem is when I click on the "new" customization tool and move say the bookmark star button or say one of my older add-ons like my email checker. I finally get it so this thing is at least passable to me now and close out of the new customize page. I can do that just fine, the problem I then have is if I close out of Firefox - say shut down the computer - then come back a bit later everything has been moved around.
Things I had on the left side of the screen are now on the right. Buttons are back to their default or just missing all together. Is this a glitch? Or am I just doing something wrong?

Hello,
This happens in safe mode?
*[https://support.mozilla.org/kb/troubleshoot-firefox-issues-using-safe-mode Firefox in safe mode]
Maybe you have a corrupted localstore.rdf, try unhide the hidden files and folder, go to you profile folder, close Firefox, delete or rename the lcalstore.rdf file and restart Firefox, then try make and changes and check if the problem still occur:
*[http://kb.mozillazine.org/Show_hidden_files_and_folders]
*[https://support.mozilla.org/kb/profiles-where-firefox-stores-user-data Profiles]
Also:
*[https://support.mozilla.org/kb/how-to-fix-preferences-wont-save Preferences won’t save]
*[http://kb.mozillazine.org/Preferences_not_saved]
*[https://support.mozilla.org/kb/reset-firefox-easily-fix-most-problems Reset Firefox]

Firefox 4b10 does not warn when closing multiple tabs (setting is on).

Hey,
Firefox 4b10 won't warn me when I'm about to close multiple tabs. I have verified this setting is on multiple times.
The only reason I think this is happening is when I decided to download Firefox 3 (latest version). I installed it to see if IPTV would work on it, and decided to uninstall it. This also ended up deleting some of my addon's such as ABP.
I've tried uninstalling FF, using CCleaner and then reinstalling it.
For some reason when I install FF4, I can't seem to find the SAFE MODE option, even when I run it with "firefox -safe-mode".
Could someone help please????
Thanks. :D

The prefs for Save & Quit the warning message have been set by default to false in current Firefox 4 beta versions (Bug 592822 - Remove quit warning dialog).
You can set the warn prefs on the about:config page to true via the right-click context menu or toggle with a double left-click.
* browser.tabs.warnOnClose , see http://kb.mozillazine.org/About%3Aconfig_entries
* browser.warnOnQuit , see http://kb.mozillazine.org/browser.warnOnQuit
* browser.warnOnRestart , see http://kb.mozillazine.org/browser.warnOnRestart
See also http://kb.mozillazine.org/about%3Aconfig

Why am I not warned when closing multiple tabs even though it is set in the preferences to do so ... using Version 4 on a MAC

I have set the preferences to warn me when I close the browser window with multiple tabs open. No warning is given and the multiple tabs have to be reproduced every time I open. In previous versions I would be asked if I wanted to SAVE the tabs for the next session ... which I do. And, when opening Firefox the next time, the tabs would all be there.

You can use "History > Restore Previous Session" to get back the previous session.
There is also a "Restore Previous Session" button on the default about:home Home page.
Another possibility is to use:
*Firefox > Preferences > General > Startup: "When Firefox Starts": "Show my windows and tabs from last time"
You can set the warn prefs on the about:config page to true via the right-click context menu or toggle with a double left-click.
* browser.showQuitWarning, see http://blog.zpao.com/post/3174360617/about-that-quit-dialog
* browser.tabs.warnOnClose, see http://kb.mozillazine.org/About%3Aconfig_entries
* browser.warnOnQuit , see http://kb.mozillazine.org/browser.warnOnQuit
* browser.warnOnRestart , see http://kb.mozillazine.org/browser.warnOnRestart
To open the about:config page, type about:config in the location (address) bar and press the "Enter" key, just like you type the url of a website to open a website. 
If you see a warning then you can confirm that you want to access that page.

HT1776 MacBook does not sleep when closed

I have a Late 2013 Retina Macbook Pro running Mavericks. Sometimes when I close the lid, it does not sleep or turn off the display, even after the set time in Energy Saver preferences. My main concern is that I have my security settings set to lock my computer 5 seconds after sleep/turning off the display, and this does not happen, as it does not go to sleep. The only way I notice is that when I open the computer some time later, the screen is already on and it is not locked. There are no periphials connected when this happens.

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