Exception in thread "AWT-EventQueue-0": java.lang.NullPointerException
at java.util.Objects.requireNonNull(Unknown Source)
at java.util.Arrays$ArrayList.(Unknown Source)
at java.util.Arrays.asList(Unknown Source)
at com.mathworks.mlwidgets.importtool.AbstractFileTableModel.getDefaultColumnVarNames(AbstractFileTableModel.java:139)
at com.mathworks.mlwidgets.importtool.ImportTable.getColumnVariableNamesArray(ImportTable.java:316)
at com.mathworks.mlwidgets.importtool.WorksheetTable.createDefaultColumnsFromModel(WorksheetTable.java:415)
at com.mathworks.mlwidgets.importtool.WorksheetTable.tableChanged(WorksheetTable.java:327)
at javax.swing.table.AbstractTableModel.fireTableChanged(Unknown Source)
at javax.swing.table.AbstractTableModel.fireTableStructureChanged(Unknown Source)
at com.mathworks.mlwidgets.importtool.AbstractFileTableModel.matlabCallback(AbstractFileTableModel.java:853)
at com.mathworks.mlwidgets.importtool.WorksheetTableModel$4$2.run(WorksheetTableModel.java:585)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$500(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
这个excel数据之前一直能打开，不知道为什么就这样了
