CODEWITHSUNDEEP
javaswingjtablejbuttonjcheckbox
Mahdi_Nine
Mahdi_Nine

Reputation: 14751

How can I put a JCheckbox on a JTable?

How can I put a JCheckbox or a JButton on a specific row and column of a JTable?

Upvotes: 1

Views: 8066

Answers (3)

camickr
camickr

Reputation: 324128

As you can tell from khachik's answer support for a check box is provided by a table based on the column class of the column.

However, if you only want a check box on a specific row of a specific column then you need to override the getCellRenderer(...) and getCellEditor(...) methods to return the renderer/editor for the given cell. Something like:

public TableCellEditor getCellEditor(int row, int column)
{
    int modelColumn = convertColumnIndexToModel( column );

    if (modelColumn == 1 && row < 3)
        return getDefaultEditor(Boolean.class);
    else
        return super.getCellEditor(row, column);
}

Upvotes: 1

jfpoilpret
jfpoilpret

Reputation: 10519

For that, you'll have to write a TableCellRenderer and a TableCellEditor.

You can derive from default swing implementations to make it easier.

In each class, you'll have to override the one method of these interfaces, and in it, check the passed row and column arguments; if both row and column match your criteria, then return a JCheckBox or a JButton, otherwise return the JComponent returned by the super implementation (when using default swing implementations of these interfaces).

Upvotes: 0

khachik
khachik

Reputation: 28693

Not sure about a button, but here is a working example to put a checkbox:

import javax.swing.*;
import javax.swing.table.*;

public class Test {
  public static void main(String [] args) throws Exception {
    DefaultTableModel model = new DefaultTableModel(null, new String [] {"CheckMe", "Value"}) {
                                public Class getColumnClass(int c) {
                                  switch (c) {
                                    case 0: return Boolean.class;
                                    default: return String.class;
                                  }   
                                } };
    JTable table = new JTable(model);
    JFrame frame = new JFrame("CheckBox Test");
    frame.add(table);
    model.addRow(new Object [] {true, "This is true"});
    model.addRow(new Object [] {false, "This is false"});
    frame.pack(); frame.validate();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);
  }
}

Upvotes: 2

Related Questions