java.lang.NullPointerException

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  • nullpointerexceptions, can anybody help?
    via by Lisa Tostrams,
    • java.lang.NullPointerException at vogels.model.VogelModel.update(VogelModel.java:36) at vogels.controller.Controller.update(Controller.java:23) at vogels.view.View$3.actionPerformed(View.java:95) at javax.swing.Timer.fireActionPerformed(Timer.java:313) at javax.swing.Timer$DoPostEvent.run(Timer.java:244) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:226) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:670) at java.awt.EventQueue.access$400(EventQueue.java:96) at java.awt.EventQueue$2.run(EventQueue.java:631) at java.awt.EventQueue$2.run(EventQueue.java:629) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:105) at java.awt.EventQueue.dispatchEvent(EventQueue.java:640) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177) at java.awt.EventDispatchThread.run(EventDispatchThread.java:138)
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