Java.util.ConcurrentModificationException when storing Hashmap with XMLenco

Hi, I'm quite sure that I don't modify the map during the storage process. The Stack-Trace contains only XMLEncoder based clases, so it doesn't helps very much.
Has anyone already encountered such a problem or has any idea how to solve it?
Thanks a lot in advance.
Greetings Michael

Hi, Thanks for your reply,
but the output and debbugging shows that not modification is done during writting.
I posted the stach traces too, even I don't think it gives any hint.
Any guesses are welcome.
Greetings Michael
[DEBUG]       [AWT-EventQueue-0] "2005-07-20 11:57:58,015"       GUI.HauptFrame 
       speichern Speichern start at Line 1161
[ERROR]       [AWT-EventQueue-0] "2005-07-20 11:58:13,218"       GUI.HauptFrame$37 
       exceptionThrown  at Line 1177
java.util.ConcurrentModificationException
     at java.util.HashMap$HashIterator.nextEntry(HashMap.java:782)
     at java.util.HashMap$KeyIterator.next(HashMap.java:818)
     at java.beans.java_util_Map_PersistenceDelegate.initialize(MetaData.java:262)
     at java.beans.PersistenceDelegate.initialize(PersistenceDelegate.java:191)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:393)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:219)
     at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:254)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:395)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:100)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeObject1(Encoder.java:192)
     at java.beans.Encoder.cloneStatement(Encoder.java:205)
     at java.beans.Encoder.writeStatement(Encoder.java:236)
     at java.beans.XMLEncoder.writeStatement(XMLEncoder.java:326)
     at java.beans.DefaultPersistenceDelegate.invokeStatement(DefaultPersistenceDelegate.java:242)
     at java.beans.java_util_List_PersistenceDelegate.initialize(MetaData.java:245)
     at java.beans.PersistenceDelegate.initialize(PersistenceDelegate.java:191)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:393)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:219)
     at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:254)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:395)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:100)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeObject1(Encoder.java:192)
     at java.beans.Encoder.cloneStatement(Encoder.java:205)
     at java.beans.Encoder.writeStatement(Encoder.java:236)
     at java.beans.XMLEncoder.writeStatement(XMLEncoder.java:326)
     at java.beans.DefaultPersistenceDelegate.invokeStatement(DefaultPersistenceDelegate.java:242)
     at java.beans.java_util_List_PersistenceDelegate.initialize(MetaData.java:245)
     at java.beans.PersistenceDelegate.initialize(PersistenceDelegate.java:191)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:393)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:219)
     at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:254)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:395)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:100)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeObject1(Encoder.java:192)
     at java.beans.Encoder.cloneStatement(Encoder.java:205)
     at java.beans.Encoder.writeStatement(Encoder.java:236)
     at java.beans.XMLEncoder.writeStatement(XMLEncoder.java:326)
     at java.beans.DefaultPersistenceDelegate.invokeStatement(DefaultPersistenceDelegate.java:242)
     at java.beans.java_util_List_PersistenceDelegate.initialize(MetaData.java:245)
     at java.beans.PersistenceDelegate.initialize(PersistenceDelegate.java:191)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:393)
     at java.beans.PersistenceDelegate.initialize(PersistenceDelegate.java:191)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:393)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:219)
     at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:254)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:395)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:219)
     at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:254)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:395)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:100)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.java_util_Map_PersistenceDelegate.initialize(MetaData.java:280)
     at java.beans.PersistenceDelegate.initialize(PersistenceDelegate.java:191)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:393)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:100)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeObject1(Encoder.java:192)
     at java.beans.Encoder.cloneStatement(Encoder.java:205)
     at java.beans.Encoder.writeStatement(Encoder.java:236)
     at java.beans.XMLEncoder.writeStatement(XMLEncoder.java:326)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:253)
     at de.zew.veranlagungssimulation.GUI.HauptFrame.speichern(HauptFrame.java:1181)
     at de.zew.veranlagungssimulation.GUI.HauptFrame.speichernUnter(HauptFrame.java:1128)
     at de.zew.veranlagungssimulation.GUI.HauptFrame.dateiSpeichernUnterItem_actionPerformed(HauptFrame.java:1025)
     at de.zew.veranlagungssimulation.GUI.HauptFrame$8.actionPerformed(HauptFrame.java:340)
     at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1786)
     at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1839)
     at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
     at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
     at javax.swing.AbstractButton.doClick(AbstractButton.java:289)
     at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1113)
     at javax.swing.plaf.basic.BasicMenuItemUI$MouseInputHandler.mouseReleased(BasicMenuItemUI.java:943)
     at java.awt.Component.processMouseEvent(Component.java:5100)
     at java.awt.Component.processEvent(Component.java:4897)
     at java.awt.Container.processEvent(Container.java:1569)
     at java.awt.Component.dispatchEventImpl(Component.java:3615)
     at java.awt.Container.dispatchEventImpl(Container.java:1627)
     at java.awt.Component.dispatchEvent(Component.java:3477)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483)
     at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3198)
     at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3128)
     at java.awt.Container.dispatchEventImpl(Container.java:1613)
     at java.awt.Window.dispatchEventImpl(Window.java:1606)
     at java.awt.Component.dispatchEvent(Component.java:3477)
     at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
     at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)
[ERROR]       [AWT-EventQueue-0] "2005-07-20 11:58:13,343"       GUI.HauptFrame$37 
       exceptionThrown  at Line 1177
java.util.ConcurrentModificationException
     at java.util.HashMap$HashIterator.nextEntry(HashMap.java:782)
     at java.util.HashMap$KeyIterator.next(HashMap.java:818)
     at java.beans.java_util_Map_PersistenceDelegate.initialize(MetaData.java:262)
     at java.beans.PersistenceDelegate.initialize(PersistenceDelegate.java:191)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:393)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:219)
     at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:254)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:395)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:100)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeObject1(Encoder.java:192)
     at java.beans.Encoder.cloneStatement(Encoder.java:205)
     at java.beans.Encoder.writeStatement(Encoder.java:236)
     at java.beans.XMLEncoder.writeStatement(XMLEncoder.java:326)
     at java.beans.DefaultPersistenceDelegate.invokeStatement(DefaultPersistenceDelegate.java:242)
     at java.beans.java_util_List_PersistenceDelegate.initialize(MetaData.java:245)
     at java.beans.PersistenceDelegate.initialize(PersistenceDelegate.java:191)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:393)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:219)
     at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:254)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:395)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:100)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeObject1(Encoder.java:192)
     at java.beans.Encoder.cloneStatement(Encoder.java:205)
     at java.beans.Encoder.writeStatement(Encoder.java:236)
     at java.beans.XMLEncoder.writeStatement(XMLEncoder.java:326)
     at java.beans.DefaultPersistenceDelegate.invokeStatement(DefaultPersistenceDelegate.java:242)
     at java.beans.java_util_List_PersistenceDelegate.initialize(MetaData.java:245)
     at java.beans.PersistenceDelegate.initialize(PersistenceDelegate.java:191)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:393)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:219)
     at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:254)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:395)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:100)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeObject1(Encoder.java:192)
     at java.beans.Encoder.cloneStatement(Encoder.java:205)
     at java.beans.Encoder.writeStatement(Encoder.java:236)
     at java.beans.XMLEncoder.writeStatement(XMLEncoder.java:326)
     at java.beans.DefaultPersistenceDelegate.invokeStatement(DefaultPersistenceDelegate.java:242)
     at java.beans.java_util_List_PersistenceDelegate.initialize(MetaData.java:245)
     at java.beans.PersistenceDelegate.initialize(PersistenceDelegate.java:191)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:393)
     at java.beans.PersistenceDelegate.initialize(PersistenceDelegate.java:191)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:393)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:219)
     at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:254)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:395)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.DefaultPersistenceDelegate.doProperty(DefaultPersistenceDelegate.java:219)
     at java.beans.DefaultPersistenceDelegate.initBean(DefaultPersistenceDelegate.java:254)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:395)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:100)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.java_util_Map_PersistenceDelegate.initialize(MetaData.java:280)
     at java.beans.PersistenceDelegate.initialize(PersistenceDelegate.java:191)
     at java.beans.DefaultPersistenceDelegate.initialize(DefaultPersistenceDelegate.java:393)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:103)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeExpression(Encoder.java:260)
     at java.beans.XMLEncoder.writeExpression(XMLEncoder.java:363)
     at java.beans.PersistenceDelegate.writeObject(PersistenceDelegate.java:100)
     at java.beans.Encoder.writeObject(Encoder.java:55)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:250)
     at java.beans.Encoder.writeObject1(Encoder.java:192)
     at java.beans.Encoder.cloneStatement(Encoder.java:205)
     at java.beans.Encoder.writeStatement(Encoder.java:236)
     at java.beans.XMLEncoder.writeStatement(XMLEncoder.java:326)
     at java.beans.XMLEncoder.writeObject(XMLEncoder.java:253)
     at de.zew.veranlagungssimulation.GUI.HauptFrame.speichern(HauptFrame.java:1181)
     at de.zew.veranlagungssimulation.GUI.HauptFrame.speichernUnter(HauptFrame.java:1128)
     at de.zew.veranlagungssimulation.GUI.HauptFrame.dateiSpeichernUnterItem_actionPerformed(HauptFrame.java:1025)
     at de.zew.veranlagungssimulation.GUI.HauptFrame$8.actionPerformed(HauptFrame.java:340)
     at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1786)
     at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1839)
     at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
     at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
     at javax.swing.AbstractButton.doClick(AbstractButton.java:289)
     at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1113)
     at javax.swing.plaf.basic.BasicMenuItemUI$MouseInputHandler.mouseReleased(BasicMenuItemUI.java:943)
     at java.awt.Component.processMouseEvent(Component.java:5100)
     at java.awt.Component.processEvent(Component.java:4897)
     at java.awt.Container.processEvent(Container.java:1569)
     at java.awt.Component.dispatchEventImpl(Component.java:3615)
     at java.awt.Container.dispatchEventImpl(Container.java:1627)
     at java.awt.Component.dispatchEvent(Component.java:3477)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483)
     at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3198)
     at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3128)
     at java.awt.Container.dispatchEventImpl(Container.java:1613)
     at java.awt.Window.dispatchEventImpl(Window.java:1606)
     at java.awt.Component.dispatchEvent(Component.java:3477)
     at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
     at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)
[DEBUG]       [AWT-EventQueue-0] "2005-07-20 11:58:14,015"       GUI.HauptFrame 
       speichern Speichern ende at Line 1182 Speichern <==> Save

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    Hi Srinivasu,
    Please use FQDN (fully qualified domian name) while accessing the SAP Portal URL. Also update the host file before access with server host name and IP address.
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    Arun Jaiswal

  • Java.util.ConcurrentModificationException

    What is causing this?
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    NestedThrowables:
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         at
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    java.util.ConcurrentModificationException
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         at
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         at
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         at
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         at
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         at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
         at
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         at
    java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1304)
         at
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         at
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    com.cmptsis.kiff.customer.server.facade.ejb.CustomerSessionBean.createGroup(CustomerSessionBean.java:80)
         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
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    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
         at
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:324)
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    org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:683)
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    org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:185)
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    org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:72)
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    org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:267)
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    org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:118)
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    org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)
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    org.jboss.ejb.StatelessSessionContainer.internalInvoke(StatelessSessionContainer.java:331)
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         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
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    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
         at
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:324)
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