JTable

[Atit Shah]

i want to place a jpg file in a particular cell of a jtable at run time. is this possible and if so how? pls reply at the earliest.

[Craig Wood]

import java.awt.*;
import java.io.*;
import java.net.*;
import javax.imageio.ImageIO;
import javax.swing.*;
import javax.swing.table.*;
 
public class TableTest
{
    public static void main(String[] args)
    {
        String[] headers = {
            "column 1", "column 2", "column 3", "column 4"
        };
        int rows = 5, cols = 4;
        String[][] data = new String[rows][cols];
        for(int row = 0; row < rows; row++)
            for(int col = 0; col < cols; col++)
            {
                int index = row * cols + col + 1;
                data[row][col] = "item " + index;
            }
        JTable table = new JTable(data, headers);
        int colIndex = 1;  // show image at (row 1, col 1)
        TableColumn col = table.getColumnModel().getColumn(colIndex);
        ImageCellRenderer renderer = new ImageCellRenderer();
        col.setCellRenderer(renderer);
        col.setPreferredWidth(renderer.image.getWidth(null));
        table.setRowHeight(renderer.image.getHeight(null));
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(new JScrollPane(table));
        f.setSize(400,400);
        f.setLocation(200,200);
        f.setVisible(true);
    }
}
 
class ImageCellRenderer extends JLabel implements TableCellRenderer
{
    Image image;
 
    public ImageCellRenderer()
    {
        loadImage();
    }
 
    public Component getTableCellRendererComponent(JTable table, Object value,
                                                   boolean isSelected,
                                                   boolean hasFocus,
                                                   int rowIndex, int colIndex)
    {
        if(rowIndex == 1)
        {
            setIcon(new ImageIcon(image));
            setText("");
        }
        else
        {
            setIcon((ImageIcon)null);
            setText(value.toString());
        }
        return this;
    }
 
    private void loadImage()
    {
        String fileName = "images/duke/T3.gif";
        try
        {
            URL url = getClass().getResource(fileName);
            image = ImageIO.read(url);
        }
        catch(MalformedURLException mue)
        {
            System.err.println(mue.getMessage());
        }
        catch(IOException ioe)
        {
            System.err.println(ioe.getMessage());
        }
    }
}