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I got this on NetBeans version 5.5 (Build 200610171010) The following exception is thrown at the background and causes fierce data exchange with harddisk (not very sure though whether this is linked to the exception). java.lang.NullPointerException at org.netbeans.modules.javacore.jmiimpl.javamodel.MetadataElement.testResourceCha nge(MetadataElement.java:1190) at org.netbeans.modules.javacore.jmiimpl.javamodel.JavaDocImpl.getPosition (JavaDocImpl.java:70) at org.netbeans.modules.javacore.JMManager.getElementPosition (JMManager.java:777) at org.netbeans.modules.javacore.JMManager.getElementPosition (JMManager.java:763) at org.netbeans.modules.editor.java.NbJavaFoldManager$ClassMemberFoldInfo.<init> (NbJavaFoldManager.java:842) at org.netbeans.modules.editor.java.NbJavaFoldManager.collectClassFoldUpdates (NbJavaFoldManager.java:398) at org.netbeans.modules.editor.java.NbJavaFoldManager.collectFoldUpdates (NbJavaFoldManager.java:338) at org.netbeans.modules.editor.java.NbJavaFoldManager.updateFolds (NbJavaFoldManager.java:216) at org.netbeans.modules.editor.java.NbJavaFoldManager.resourceParsed (NbJavaFoldManager.java:183) at org.netbeans.modules.editor.java.NbJavaFoldManager$WeakParsingListener.resource Parsed(NbJavaFoldManager.java:1068) at org.netbeans.modules.javacore.JMManager$5.run(JMManager.java:1425) at org.openide.util.RequestProcessor$Task.run (RequestProcessor.java:499) [catch] at org.openide.util.RequestProcessor$Processor.run (RequestProcessor.java:932)
It's duplicate of issue 66063 *** This issue has been marked as a duplicate of 66063 ***
Reorganization of java component