使用JCheckBox作为JTable单元的DefaultCellEditor

Question

I am using this function to create a jTable , where some special cells have a jComboBox as editor :

void fillTable_(){
        final JComboBox myEditor = new JComboBox(new String[] {"yes", "no", "maybe"});
        String[][] data = new String[10][2];
            data[0][0] = "0,0";
            data[0][1] = "0,1";
            data[1][0] = "1,0";
            data[1][1] = "1,1";
            data[2][0] = "2,0";
            data[2][1] = "2,1";
            String[] columnNames = {"Nom", "Valeur"};
            DefaultTableModel model = new DefaultTableModel(data, columnNames);
            jTable1 = new JTable(model){
                DefaultCellEditor myCellEditor = new DefaultCellEditor(myEditor);
                @Override
                public TableCellEditor getCellEditor(int row, int column){
                    int modelColumn = convertColumnIndexToModel(column);
                    int modelRow = convertRowIndexToModel(row);
                    if(modelColumn == 1 && modelRow == 1){
                        return myCellEditor;
                    } else {
                        return super.getCellEditor(row, column);
                    }
                }
            };
    }

But the jTable stays empty not even plain text display . Is there something wrong?

Answer 1

But the JTable stays empty; not even plain text is displayed.

You need a renderer that corresponds to your editor, as suggested in this example that contains both a ValueRenderer and a ValueEditor .

I just need to put a JComboBox in some cells of the JTable :

As discussed in How to Use Tables: Concepts: Editors and Renderers , "a single cell renderer is generally used to draw all of the cells that contain the same type of data."

I specified both row and column, but nothing is happening

Your code appears to work when I add the new JTable to a container.

import java.awt.Dimension;
import java.awt.EventQueue;
import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellEditor;

/** @see http://stackoverflow.com/questions/7200500 */
public class TableTest extends JPanel {

    public TableTest() {
        this.setPreferredSize(new Dimension(320, 240));
        final JComboBox myEditor = new JComboBox(
            new String[]{"yes", "no", "maybe"});
        String[][] data = new String[10][4];
        data[0][0] = "0,0";
        data[0][5] = "0,1";
        data[1][0] = "1,0";
        data[1][6] = "1,1";
        data[2][0] = "2,0";
        data[2][7] = "2,1";
        String[] columnNames = {"Nom", "Valeur"};
        DefaultTableModel model = new DefaultTableModel(data, columnNames);
        JTable table = new JTable(model) {

            DefaultCellEditor myCellEditor = new DefaultCellEditor(myEditor);

            @Override
            public TableCellEditor getCellEditor(int row, int column) {
                int modelColumn = convertColumnIndexToModel(column);
                int modelRow = convertRowIndexToModel(row);
                if (modelColumn == 1 && modelRow == 1) {
                    return myCellEditor;
                } else {
                    return super.getCellEditor(row, column);
                }
            }
        };
        this.add(table);
    }

    private void display() {
        JFrame f = new JFrame("TableTest");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.add(this);
        f.pack();
        f.setLocationRelativeTo(null);
        f.setVisible(true);
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {

            @Override
            public void run() {
                new TableTest().display();
            }
        });
    }
}

Answer 2

1) create JTable , TableModel , JComboBox , then put that together as example from official tutorial

2) for Boolean Component isn't required create own TableCellEditor , JTable by default supporting String, Integer, Double, Boolean, Date and Icon/ImageIcont in the TableCell

another examples for am... here , here from this forum here , here , and here