正在从DefaultTableModel对象中删除行

Question

但仍然无法修复。我的目的是当用户在组合框中选择delete选项时，我只想完全删除该行。顺便说一下，removeRow（）方法可以在侦听器外部正常工作。下面是代码和说明：

String[] columnNames = {"Kargo ID",
                "Alıcı Adres",
                "Ağırlık(KG)",
                "Tutar(TL)",
                "Alım Saati","Durum","İletim Saati"};

        Object[][] data = {
                {new Integer(3), "Sinan Caddesi",
                    new Integer(100), new Integer(5),"" ,"",""}};



        final DefaultTableModel dtm = new DefaultTableModel(data,columnNames);
        final JTable table = new JTable(dtm){
            @Override
            public boolean isCellEditable(int row, int column) {
                return column == 5;//Combobox column
            }

        };

        //Making Combobox
        TableColumn c = table.getColumnModel().getColumn(5);
        JComboBox comboBox = new JComboBox();
        comboBox.addItem("");
        comboBox.addItem("Delete");

        c.setCellEditor(new DefaultCellEditor(comboBox));

        //System.out.println(dtm.getRowCount());
        table.setPreferredScrollableViewportSize(new Dimension(500, 70));
        table.setFillsViewportHeight(false);

        //I printed row and column numbers, they re correct. 
        dtm.addTableModelListener(new TableModelListener() {

            @Override
            public void tableChanged(TableModelEvent e) {
                int row = e.getFirstRow();
                int column = e.getColumn();
                DefaultTableModel model = (DefaultTableModel)e.getSource();
                Object data = model.getValueAt(row, column);
                //System.out.println(data); DATA IS CORRECT
                if(((String)data).equals("Delete"))
                    dtm.removeRow(row);//Exception Here

                //System.out.println(row + " " + column);
            }
        });

我是不是漏了什么重要的地方？如有任何帮助，我们将不胜感激。

Answer 1

“非常”的基本思想是，当调用TableModel#setvalue时，您希望检查被修改的列。如果column是（在本例中）5，您将希望检查值是什么...

例如...

public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
    if (columnIndex == 5) {
        if ("Delete".equals(aValue)) {
            removeRow(rowIndex);
        }
    }
}

请记住，上面的示例覆盖了setvalueat的默认行为，因此如果您依赖于模型中要更新的值，则需要调用super.setvalueat(...)