如何设置 jtable 中的 jcombobox 的默认选定值？

Question

model = new DefaultComboBoxModel<>();
    model.addElement("Absent");
    model.addElement("Present");
    model.addElement("On Leave");
    model.setSelectedItem("Absent");

    JComboBox cbox = new JComboBox(model);
    DefaultTableModel attModel = (DefaultTableModel)tableEmpAtt.getModel();
    TableColumn col = tableEmpAtt.getColumnModel().getColumn(3);
    col.setCellEditor(new DefaultCellEditor(cbox));

添加行：

ResultSet rs = st.executeQuery("select Employee_ID,First_Name,Last_Name,Contact_No from Employee_Information");
        while(rs.next()){
            attModel.addRow(new Object[]{rs.getInt(1),rs.getString(2)+" "+rs.getString(3),rs.getString(4)});
        }

这是加载时的样子

这是单击存在状态下的单元格时的样子

我想对其进行设置，以便在第一次加载时列存在的默认值为不存在

Answer 1

i want to set it so that when its loaded for the first time the column presence has a default value of absent

组合框只会select TableModel 中的值。

所以你需要在添加每一行时将"Absent"添加到table模型中：

//attModel.addRow(new Object[]{rs.getInt(1),rs.getString(2)+" "+rs.getString(3),rs.getString(4)});

Vector<Object> row = new Vector<Object>();
row.addElement(rs.getInt(1));
row.addElement(rs.getString(2) + " " + rs.getString(3));
row.addElement(rs.getString(4));
row.addElement("Absent");
attModel.addRow( row );

如何设置 jtable 中的 jcombobox 的默认选定值？

How can i set the default selected value of a jcombobox which is inside a jtable?

java

swing

jtable

jcombobox