How to add checkboxes to JTABLE swing [closed]

Question

Does anyone know how to put a JCheckBox in a JTable column? Something like this:

I took this from How To use Tables

Thanks in advance.

Censurable

What have you tried? – Representation

the Swing tutorials tell you exactly how to do such a thing. I recommend you have a look. – Transvestite

You can get the "checkboxes" column after table creation, and then setCellEditor( layersTable.getDefaultEditor( Boolean.class ) ) and cell renderer similar way. PS. I regret this is closed and I can't answer, it's perfect question for quick answer :( – Ancon

Answer 1

1) JTable knows JCheckbox with built-in Boolean TableCellRenderers and TableCellEditor by default, then there is contraproductive declare something about that,

2) AbstractTableModel should be useful, where is in the JTable required to reduce/restrict/change nested and inherits methods by default implemented in the DefaultTableModel,

3) consider using DefaultTableModel, (if you are not sure about how to works) instead of AbstractTableModel,

could be generated from simple code:

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

public class TableCheckBox extends JFrame {

    private static final long serialVersionUID = 1L;
    private JTable table;

    public TableCheckBox() {
        Object[] columnNames = {"Type", "Company", "Shares", "Price", "Boolean"};
        Object[][] data = {
            {"Buy", "IBM", new Integer(1000), new Double(80.50), false},
            {"Sell", "MicroSoft", new Integer(2000), new Double(6.25), true},
            {"Sell", "Apple", new Integer(3000), new Double(7.35), true},
            {"Buy", "Nortel", new Integer(4000), new Double(20.00), false}
        };
        DefaultTableModel model = new DefaultTableModel(data, columnNames);
        table = new JTable(model) {

            private static final long serialVersionUID = 1L;

            /*@Override
            public Class getColumnClass(int column) {
            return getValueAt(0, column).getClass();
            }*/
            @Override
            public Class getColumnClass(int column) {
                switch (column) {
                    case 0:
                        return String.class;
                    case 1:
                        return String.class;
                    case 2:
                        return Integer.class;
                    case 3:
                        return Double.class;
                    default:
                        return Boolean.class;
                }
            }
        };
        table.setPreferredScrollableViewportSize(table.getPreferredSize());
        JScrollPane scrollPane = new JScrollPane(table);
        getContentPane().add(scrollPane);
    }

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

            @Override
            public void run() {
                TableCheckBox frame = new TableCheckBox();
                frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
                frame.pack();
                frame.setLocation(150, 150);
                frame.setVisible(true);
            }
        });
    }
}

Sheen

-1 for subclassing the table for data-related reasons: it's clearly the responsibility of the model to return the correct classes, the view must not second guess that – Fluid

1) I never heard about subClassing issues, seriously do not understand, it might be appropriate to clarify the impetus with posting here a bright example, or link to with detailed subscription, 2) maybe there deepest reasin for why I block non-subclassing code just and only about swift level for OP , 3) imaging that, :-) – Sheen

The default JTable#getColumnClass method does this: return getModel().getColumnClass(convertColumnIndexToModel(column));. If a user moves the table column, this "solution" will break. TableModel#getColumnClass is what should be overridden. – Lucey

Your code has been shamelessly copied here. I have flagged the moderators regarding that poster's actions. – Transvestite