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java.lang.IllegalArgumentException: Child tree not found (type: 54 firstToken: 284 lastToken: 290 resource: realestate/gui/commons/menus/FileMenu.java) class org.netbeans.jmi.javamodel.Import$Impl realestate.utility.DateUtility valid:true | class org.netbeans.jmi.javamodel.Resource$Impl realestate/gui/commons/menus/FileMenu.java valid:true | at org.netbeans.modules.javacore.jmiimpl.javamodel.MetadataElement.getASTree(MetadataElement.java:1298) at org.netbeans.modules.javacore.jmiimpl.javamodel.MetadataElement.getASTree(MetadataElement.java:521) at org.netbeans.modules.javacore.parser.ElementInfo.getTypeAST(ElementInfo.java:92) at org.netbeans.modules.javacore.jmiimpl.javamodel.ImportImpl.initChildren(ImportImpl.java:231) at org.netbeans.modules.javacore.jmiimpl.javamodel.ImportImpl.getIdentifier(ImportImpl.java:216) at org.netbeans.jmi.javamodel.Import$Impl.getIdentifier(Unknown Source) at org.netbeans.modules.javacore.jmiimpl.javamodel.ImportImpl.setName(ImportImpl.java:100) at org.netbeans.jmi.javamodel.Import$Impl.setName(Unknown Source) at org.netbeans.modules.javacore.jmiimpl.javamodel.ImportImpl.matchElementInfo(ImportImpl.java:74) at org.netbeans.modules.javacore.jmiimpl.javamodel.SemiPersistentElement.setElementInfo (SemiPersistentElement.java:146) at org.netbeans.modules.javacore.jmiimpl.javamodel.SemiPersistentElement.createChildrenList (SemiPersistentElement.java:894) at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.initChildren(ResourceImpl.java:343) at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.initChildren(ResourceImpl.java:322) at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.getImports(ResourceImpl.java:277) at org.netbeans.jmi.javamodel.Resource$Impl.getImports(Unknown Source) at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.matchElementInfo(ResourceImpl.java:237) at org.netbeans.modules.javacore.jmiimpl.javamodel.SemiPersistentElement.setElementInfo (SemiPersistentElement.java:146) at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.updateMetadata(ResourceImpl.java:768) at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.directUpdate(ResourceImpl.java:760) at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.checkUpToDate(ResourceImpl.java:650) at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.updateFromFileObject(ResourceImpl.java:455) at org.netbeans.modules.javacore.ExclusiveMutex.parseIfNeeded(ExclusiveMutex.java:285) at org.netbeans.modules.javacore.ExclusiveMutex.enter(ExclusiveMutex.java:177) at org.netbeans.mdr.NBMDRepositoryImpl.beginTrans(NBMDRepositoryImpl.java:234) at org.netbeans.modules.java.JavaEditor$2.run(JavaEditor.java:272) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:499) [catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:932)
How do you reproduce this issue? Does this happens with NB5.5.1 / NB6? Which JDK are you using?
This issue is not valid in current builds any more. Java support was completely redesigned in 6.0 time frame. Please use NetBeans 6.0 and later.