java.lang.NullPointerException

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  • JTable  error!!!
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    • java.lang.NullPointerException at javax.swing.JTable$2.getColumnCount(Unknown Source) at javax.swing.JTable.createDefaultColumnsFromModel(Unknown Source) at javax.swing.JTable.tableChanged(Unknown Source) at javax.swing.JTable.setModel(Unknown Source) at javax.swing.JTable.<init>(Unknown Source) at javax.swing.JTable.<init>(Unknown Source) at javax.swing.JTable.<init>(Unknown Source) at plainTable.<init>(simpleTable.java:24) at simpleTable.main(simpleTable.java:52)
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