Serialization code for Swing is throwing exception.
Unzip the attactment and
Execute the Attached test case SerializeButton.
In the Frame click on serialize button and then
Clik on Deserialize button- it opens up another frame.
This new frame is obtained from the desrialization of the data stores in SerFile.
Clik on Deserialize on this new frame and it works exactly the same as the original frma- deserializes data and opnes up a new Frame.
Now clik on serialize. The following exception is thrown.

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
       at javax.swing.plaf.synth.SynthLookAndFeel.paintRegion(SynthLookAndFeel.java:352)
       at javax.swing.plaf.synth.SynthLookAndFeel.update(SynthLookAndFeel.java:316)
       at javax.swing.plaf.synth.SynthRootPaneUI.update(SynthRootPaneUI.java:77)
       at javax.swing.JComponent.paintComponent(JComponent.java:740)
       at javax.swing.JComponent.paint(JComponent.java:1003)
       at javax.swing.JComponent.paintWithOffscreenBuffer(JComponent.java:4930)
       at javax.swing.JComponent.paintDoubleBuffered(JComponent.java:4883)
       at javax.swing.JComponent._paintImmediately(JComponent.java:4826)
       at javax.swing.JComponent.paintImmediately(JComponent.java:4633)
       at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:451)
       at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(System.EventQueueUtilities.java:114)
       at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
       at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
       at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234)
       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)