TranQuocViet

Help me! When I'm drop table at database out dropdown menu is Netbeans start error. This is the error code: Thanks for everyone help me. Thanks.

java.lang.NullPointerException at com.sun.sql.rowset.RowSetMetaDataXImpl.getColumnClassName(RowSetMetaDataXImpl.java:74) at com.sun.data.provider.impl.CachedRowSetDataProvider.getType(CachedRowSetDataProvider.java:526) at com.sun.rave.propertyeditors.binding.nodes.DataProviderTargetNodeFactory$DataProviderTargetNode$SelectItemsNode.initCustomPanel(DataProviderTargetNodeFactory.java:250) at com.sun.rave.propertyeditors.binding.nodes.DataProviderTargetNodeFactory$DataProviderTargetNode$SelectItemsNode.<init>(DataProviderTargetNodeFactory.java:166) at com.sun.rave.propertyeditors.binding.nodes.DataProviderTargetNodeFactory$DataProviderTargetNode$OptionsNode.<init>(DataProviderTargetNodeFactory.java:149) at com.sun.rave.propertyeditors.binding.nodes.DataProviderTargetNodeFactory$DataProviderTargetNode$1$1.run(DataProviderTargetNodeFactory.java:68) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEvent(EventQueue.java:461) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:153) at java.awt.Dialog$1.run(Dialog.java:515) at java.awt.Dialog.show(Dialog.java:536) at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:816) at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:859) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:847) at org.openide.util.Mutex.doEventAccess(Mutex.java:1178) at org.openide.util.Mutex.readAccess(Mutex.java:215) at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:832) at com.sun.rave.insync.CustomizerDisplayer.show(CustomizerDisplayer.java:132) at com.sun.rave.insync.ResultHandler.handleResult(ResultHandler.java:171) at com.sun.rave.insync.action.AbstractDisplayActionAction.invokeDisplayAction(AbstractDisplayActionAction.java:109) at com.sun.rave.insync.action.AbstractDisplayActionAction.access$200(AbstractDisplayActionAction.java:58) at com.sun.rave.insync.action.AbstractDisplayActionAction$SingleDisplayActionAction.actionPerformed(AbstractDisplayActionAction.java:236) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258) at javax.swing.AbstractButton.doClick(AbstractButton.java:302) at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1000) at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1041) at java.awt.Component.processMouseEvent(Component.java:5488) at javax.swing.JComponent.processMouseEvent(JComponent.java:3126) 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:3892) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822) at java.awt.Container.dispatchEventImpl(Container.java:2010) at java.awt.Window.dispatchEventImpl(Window.java:1774) at java.awt.Component.dispatchEvent(Component.java:3803) catch at java.awt.EventQueue.dispatchEvent(EventQueue.java:463) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242) 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)

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