jMemorize - exception in JTable code

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Hi,
I added jMemorize[0] to the list of Free Swing apps. I just stumbled over the
app and tried to run it but it fails with a NPE:

java.lang.reflect.InvocationTargetException
   at java.lang.reflect.Method.invokeNative (Native Method)
   at java.lang.reflect.Method.invoke (Method.java:355)
   at jamvm.java.lang.JarLauncher.main (JarLauncher.java:50)
Caused by: java.lang.NullPointerException
   at jmemorize.gui.swing.CardTable.columnMarginChanged (Unknown Source)
   at javax.swing.table.DefaultTableColumnModel.fireColumnMarginChanged
(DefaultTableColumnModel.java:493)
   at javax.swing.table.DefaultTableColumnModel.setColumnMargin
(DefaultTableColumnModel.java:171)
   at javax.swing.JTable.setIntercellSpacing (JTable.java:2950)
   at javax.swing.JTable.initializeLocalVars (JTable.java:1720)
   at javax.swing.JTable.<init> (JTable.java:1664)
   at javax.swing.JTable.<init> (JTable.java:1582)
   at jmemorize.gui.swing.CardTable.<init> (Unknown Source)
   at jmemorize.gui.swing.FindFrame.<init> (Unknown Source)
   at jmemorize.gui.swing.MainFrame.<init> (Unknown Source)
   at jmemorize.core.Main.run (Unknown Source)
   at jmemorize.core.Main.main (Unknown Source)
   at java.lang.reflect.Method.invokeNative (Native Method)
   ...2 more

Since there are some Swing hackers who frequently work on JTable this might be a
low hanging fruit for them.

cya
Robert

[0] - http://riad.de/jmemorize
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