Review rquest for 7055065, NPE from JTable when quit editing with empty value in number culumns (original) (raw)

Thu Apr 12 11:37:12 UTC 2012

 public TableDemo() {
     super(new GridLayout(1, 0));

     final String[] columnNames = { "String", "Number" };
     final Object[][] data = { { "aaaa", new Integer(5) },
             { "bbbb", new Integer(3) }, { "cccc", new Integer(2) },
             { "dddd", new Integer(20) }, { "eeee", new Integer(10) } };
     final JTable table = new JTable(data, columnNames);

     table.setPreferredScrollableViewportSize(new Dimension(500, 400));
     table.setFillsViewportHeight(true);
     TableModel dataModel = new AbstractTableModel() {

         public int getColumnCount() {
             return columnNames.length;
         }
         public int getRowCount() {
             return data.length;
         }
         public Object getValueAt(int row, int col) {
             return data[row][col];
         }
         public String getColumnName(int column) {
             return columnNames[column];
         }
         public Class<?> getColumnClass(int c) {
             return getValueAt(0, c).getClass();
         }
         public boolean isCellEditable(int row, int col) {
             return col != 5;
         }
         public void setValueAt(Object aValue, int row, int column) {
             data[row][column] = aValue;
         }
     };
     table.setModel(dataModel);
     TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(
             dataModel);
     table.setRowSorter(sorter);

     JScrollPane scrollPane = new JScrollPane(table);
     add(scrollPane);
 }

 public static void main(String[] args) throws Exception {
     javax.swing.SwingUtilities.invokeAndWait(new Runnable() {
         public void run() {
             JFrame frame = new JFrame("SimpleTableDemo");
             frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

             TableDemo newContentPane = new TableDemo();
             newContentPane.setOpaque(true);
             frame.setContentPane(newContentPane);

             frame.pack();
             frame.setVisible(true);
         }
     });
 }