Hi,

When running layout.arrang(this) in a flowChart (when layout is an AnnealLayout variable) I got this exception:

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at com.mindfusion.jdiagram.Arrow.i(Unknown Source)
at com.mindfusion.jdiagram.Node$3.a(Unknown Source)
at com.mindfusion.jdiagram.MethodCallVisitor.a(Unknown Source)
at com.mindfusion.jdiagram.Node.a(Unknown Source)
at com.mindfusion.jdiagram.Node.c(Unknown Source)
at com.mindfusion.jdiagram.Node.move(Unknown Source)
at com.mindfusion.jdiagram.FCNode.setBounds(Unknown Source)
at com.mindfusion.jdiagram.jlayout.AnnealLayout.arrange(Unknown Source)
at com.mindfusion.jdiagram.AnnealLayout.arrange(Unknown Source)
at com.precise.autodiscovery.gui.discoverServers.topology.diagram.ADFlowChartImpl.u
pdateFlowChart(ADFlowChartImpl.java:191)
at com.precise.autodiscovery.gui.discoverServers.topology.diagram.DiagramViewPanel.
updateFlowChart(DiagramViewPanel.java:257)
at com.precise.autodiscovery.gui.discoverServers.DiscoverServersTabbedPane$DiagramC
hangeListener.stateChanged(DiscoverServersTabbedPane.java:169)
at javax.swing.JTabbedPane.fireStateChanged(Unknown Source)
at javax.swing.JTabbedPane$ModelListener.stateChanged(Unknown Source)
at javax.swing.DefaultSingleSelectionModel.fireStateChanged(Unknown Source)
at javax.swing.DefaultSingleSelectionModel.setSelectedIndex(Unknown Source)
at javax.swing.JTabbedPane.setSelectedIndexImpl(Unknown Source)
at javax.swing.JTabbedPane.setSelectedIndex(Unknown Source)
at javax.swing.plaf.basic.BasicTabbedPaneUI$Handler.mousePressed(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(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)


This happened once - it doesn't happen every time.

Do you mean when user edits the diagram?
That's impossible, since I have this setting:
    setBehavior(BehaviorType.DoNothing);
Nothing can be done by the user.

If I create Null items for the arrows - it's by mistake. I added a few tests in the code to look for null values if I made them by mistake.

Thanks!