eddy chen created NETBEANS-4398:
-----------------------------------

             Summary: After select data from a database browser, the message 
tool bar shows an error.
                 Key: NETBEANS-4398
                 URL: https://issues.apache.org/jira/browse/NETBEANS-4398
             Project: NetBeans
          Issue Type: Bug
         Environment: Mac OS X 10.15.5
            Reporter: eddy chen


Right click on a database link, select ''View Data...',  the message tool bar 
shows an error. SQL command windows appeared after few seconds. And, no data 
selected.

Error message:
java.lang.NullPointerExceptionjava.lang.NullPointerException at 
org.netbeans.core.windows.model.DefaultModeModel.compareFullFilePath(DefaultModeModel.java:235)
 at 
org.netbeans.core.windows.model.DefaultModeModel.access$000(DefaultModeModel.java:51)
 at 
org.netbeans.core.windows.model.DefaultModeModel$2.compare(DefaultModeModel.java:220)
 at 
org.netbeans.core.windows.model.DefaultModeModel$2.compare(DefaultModeModel.java:206)
 at java.util.TimSort.binarySort(TimSort.java:296) at 
java.util.TimSort.sort(TimSort.java:221) at 
java.util.Arrays.sort(Arrays.java:1512) at 
java.util.ArrayList.sort(ArrayList.java:1462) at 
java.util.Collections.sort(Collections.java:177) at 
org.netbeans.core.windows.model.DefaultModeModel.sortByFile(DefaultModeModel.java:206)
 at 
org.netbeans.core.windows.model.DefaultModeModel.sortOpenedTopComponents(DefaultModeModel.java:150)
 at 
org.netbeans.core.windows.model.DefaultModeModel.addOpenedTopComponent(DefaultModeModel.java:136)
 at 
org.netbeans.core.windows.model.DefaultModel.addModeOpenedTopComponent(DefaultModel.java:672)
 at 
org.netbeans.core.windows.Central.addModeOpenedTopComponent(Central.java:763) 
at org.netbeans.core.windows.ModeImpl.addOpenedTopComponent(ModeImpl.java:333) 
at 
org.netbeans.core.windows.WindowManagerImpl.topComponentOpenAtTabPosition(WindowManagerImpl.java:1309)
 at 
org.netbeans.core.windows.WindowManagerImpl.topComponentOpen(WindowManagerImpl.java:1266)
 at org.openide.windows.TopComponent.open(TopComponent.java:472) at 
org.openide.windows.TopComponent.open(TopComponent.java:452) at 
org.openide.text.CloneableEditor.open(CloneableEditor.java:428) at 
org.netbeans.modules.db.sql.loader.SQLCloneableEditor.open(SQLCloneableEditor.java:581)
 at 
org.openide.windows.CloneableOpenSupport.openCloneableTopComponent(CloneableOpenSupport.java:183)
 at 
org.openide.windows.CloneableOpenSupport$1.run(CloneableOpenSupport.java:82) at 
java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311) at 
java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758) at 
java.awt.EventQueue.access$500(EventQueue.java:97) at 
java.awt.EventQueue$3.run(EventQueue.java:709) at 
java.awt.EventQueue$3.run(EventQueue.java:703) at 
java.security.AccessController.doPrivileged(Native Method) at 
java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
 at java.awt.EventQueue.dispatchEvent(EventQueue.java:728) at 
org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:136)[catch]
 at 
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
 at 
java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) 
at 
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) at 
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at 
java.awt.EventDispatchThread.run(EventDispatchThread.java:82)



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