Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

java.lang.NullPointerException: 	at org.pentaho.ui.xul.swing.tags.SwingTree.setElements(SwingTree.java:806)	at sun.reflect.GeneratedMethodAccessor54.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at org.pentaho.ui.xul.swing.SwingBinding$1.propertyChange(SwingBinding.java:96)	at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source)	at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source)	at org.pentaho.ui.xul.XulEventSourceAdapter.firePropertyChange(XulEventSourceAdapter.java:27)	at com.teradata.aggdes.ui.impl.AjiOutputModel.setAvailableIndexColumns(AjiOutputModel.java:135)	at com.teradata.aggdes.ui.impl.AjiOutputModel.refreshAvailableColumns(AjiOutputModel.java:169)	at com.teradata.aggdes.ui.impl.AjiOutputUiExtension.loadOutput(AjiOutputUiExtension.java:137)	at org.pentaho.aggdes.ui.form.controller.AggController.applyUiExtensions(AggController.java:218)	at org.pentaho.aggdes.ui.form.controller.AggController$4.listChanged(AggController.java:168)	at org.pentaho.aggdes.ui.model.impl.AggListImpl.fireEvent(AggListImpl.java:68)	at org.pentaho.aggdes.ui.model.impl.AggListImpl.setSelectedIndex(AggListImpl.java:118)	at org.pentaho.aggdes.ui.form.controller.AggListController$3.listChanged(AggListController.java:436)	at org.pentaho.aggdes.ui.model.impl.AggListImpl.fireEvent(AggListImpl.java:68)	at org.pentaho.aggdes.ui.model.impl.AggListImpl.removeAgg(AggListImpl.java:99)	at org.pentaho.aggdes.ui.form.controller.AggListController.removeAgg(AggListController.java:564)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at org.pentaho.ui.xul.impl.AbstractXulDomContainer.invoke(AbstractXulDomContainer.java:294)	at org.pentaho.ui.xul.swing.tags.SwingButton$1$1.run(SwingButton.java:80)	at java.awt.event.InvocationEvent.dispatch(Unknown Source)	at java.awt.EventQueue.dispatchEvent(Unknown Source)	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)	at java.awt.EventDispatchThread.run(Unknown Source)