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via Coderanch by Partheban Udayakumar, 1 year ago
This exception has no message.
java.lang.NullPointerException: 	at ProgressbarTest.Server.propertyChange(Server.java:82)	at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335)	at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327)	at javax.swing.SwingWorker$SwingWorkerPropertyChangeSupport.firePropertyChange(SwingWorker.java:854)	at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263)	at javax.swing.SwingWorker.firePropertyChange(SwingWorker.java:676)	at javax.swing.SwingWorker$4.run(SwingWorker.java:501)	at sun.swing.AccumulativeRunnable.run(AccumulativeRunnable.java:112)	at javax.swing.SwingWorker$DoSubmitAccumulativeRunnable.run(SwingWorker.java:832)	at sun.swing.AccumulativeRunnable.run(AccumulativeRunnable.java:112)	at javax.swing.SwingWorker$DoSubmitAccumulativeRunnable.actionPerformed(SwingWorker.java:842)	at javax.swing.Timer.fireActionPerformed(Timer.java:312)	at javax.swing.Timer$DoPostEvent.run(Timer.java:244)	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)	at java.awt.EventQueue.access$200(EventQueue.java:103)	at java.awt.EventQueue$3.run(EventQueue.java:694)	at java.awt.EventQueue$3.run(EventQueue.java:692)	at java.security.AccessController.doPrivileged(Native Method)	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)	at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)