Adding Buttons inside cell of JTable along with data?

java, jbutton, jtable, swing

Solution

Yes, it is possible, although It won't be easy.

You have to write your own custom cell renderer and your own cell editor.

This is a sample I made in 5 minutes:

It is far from perfect, but shows the concept.

Here's the source code:

import java.awt.Component;
import java.awt.Font;
import javax.swing.*;
import javax.swing.table.*;
import java.awt.Dimension;

public class CustomCell {
    public static void main( String [] args ) { 
        Object [] columnNames = new Object[]{ "Id", "Quantity" };
        Object [][] data        = new Object[][]{ {"06", 1}, {"08", 2} };

        JTable table = new JTable( data, columnNames ) { 
            public TableCellRenderer getCellRenderer( int row, int column ) {
                return new PlusMinusCellRenderer();
            }
         };

        table.setRowHeight( 32 );
        showFrame( table );
    }

    private static void showFrame( JTable table ) {
        JFrame f = new JFrame("Custom Cell Renderer sample" );
        f.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
        f.add( new JScrollPane( table ) );
        f.pack();
        f.setVisible( true );
    }
}

class PlusMinusCellRenderer extends JPanel implements TableCellRenderer {
        public Component getTableCellRendererComponent(
                            final JTable table, Object value,
                            boolean isSelected, boolean hasFocus,
                            int row, int column) {
                this.add( new JTextField( value.toString()  ) );
                this.add( new JButton("+"));
                this.add( new JButton("-"));
                return this;
        }
}

Here's a thread that may be interesting and here.

Problem

Is it possible to add buttons inside the JTable cell along with data? What I am trying to do is to create a table with columns which display data(number) from the database, and two buttons to increase/decrease the number inside the same cell. |ID | Quantity| |06| 2 [+][-] | it would be something like above with [+][-] being buttons. So when I press [+], the number will change to 3 and 1 if pressing [-].

Original source