CODEWITHSUNDEEP
javaswingjtableimageicon
mkumar118
mkumar118

Reputation: 481

Show images in some columns in jtable

I am making a JTable where the first two columns contain strings and the rest of the columns contain icons (specifically, objects of the class ImageIcon). I know how to do either, but how do I mix both in 1 table such that some columns return strings while others return icons?

--EDIT--
explanation for code: data is a 2D string array. For the first two columns, i want them to be displayed as-it-is in the table. For all the rest of the columns, there are only two possible values, "Y" or "N". Now i want an ImageIcon to be displayed if there is a "Y", otherwise just leave it blank if there is a "N".

(in case it helps to know, i am drawing a comparison table where i want a tick mark icon to be displayed if the value is "Y" otherwise just leave the cell empty if the value is "N")

right now the output is like this:
value of PATH_TO_ICON ("//home//....") in case of "Y"
"javax.swing.ImageIcon@288e509b" in case of "N"

class MyTableModel extends AbstractTableModel {

    private Object[][] data;
    private String[] headers;

    public MyTableModel(String[][] data, String[] headers) {
        super();
        this.data = data;
        this.headers = headers;
    }

    @Override
    public int getColumnCount() {
        return headers.length;
    }

    @Override
    public int getRowCount() {
        return data.length;
    }

    @Override
    public Object getValueAt(int row, int col) {
        if (col < 2) {
            return data[row][col];
        } else {
            if (data[row][col].equals("Y")) {
                return new ImageIcon(PATH_TO_ICON);
            } else if(data[row][col].equals("N")) {
                return new ImageIcon();
                            } else return null;
        }
    }

    @Override
    public Class<?> getColumnClass(int col) {
        if (col < 2) {
            return String.class;
        } else {
            return ImageIcon.class;
        }
    }
}

Upvotes: 3

Views: 2651

Answers (3)

Andrew Thompson
Andrew Thompson

Reputation: 168825

Set the column class (for each column) as needed. As mentioned by @mKorbel, see also How to Use Tables - Concepts: Editors and Renderers.

Upvotes: 4

mkumar118
mkumar118

Reputation: 481

This is the correct code.

import java.awt.Dimension;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;

public class MainTest extends JFrame {
private static final long serialVersionUID = 1L;


public static void main(String[] args) {
    MainTest mt = new MainTest();
    mt.doThis();
}

public void doThis(){
    String PATH_TO_ICON = "//home//icon.png";
    String[] headers = { "A", "B", "File1", "File2" };
    String[][] data = { { "1", "abc", "Y", "N" }, { "2", "def", "Y", "Y" } };
    JScrollPane scrollpane = new JScrollPane();
    JTable table = new JTable();
    table.setModel(new MyTableModel(data, headers, PATH_TO_ICON));
    scrollpane.setViewportView(table);

    // layout
    this.add(scrollpane);
    this.setLocationRelativeTo(null);
    this.setMinimumSize(new Dimension(400,300));
    this.setPreferredSize(new Dimension(600,400));
    this.setDefaultCloseOperation(EXIT_ON_CLOSE);
    this.setVisible(true);
}
}

class MyTableModel extends AbstractTableModel {
private static final long serialVersionUID = 1L;
private Object[][] data;
private String[] headers;
private String PATH_TO_ICON;

public MyTableModel(String[][] data, String[] headers, String PATH_TO_ICON) {
    super();
    this.data = data;
    this.headers = headers;
    this.PATH_TO_ICON = PATH_TO_ICON;
}

@Override
public int getColumnCount() {
    return headers.length;
}

@Override
public int getRowCount() {
    return data.length;
}

@Override
public Object getValueAt(int row, int col) {
    if (col < 2) {
        return data[row][col];
    } else {
        if (data[row][col].equals("Y")) {
            return new ImageIcon(PATH_TO_ICON);
        } else if (data[row][col].equals("N")) {
            return new ImageIcon();
        } else
            return null;
    }
}

@Override
public Class<?> getColumnClass(int col) {
    if (col < 2) {
        return String.class;
    } else {
        return ImageIcon.class;
    }
}

}

Upvotes: 1

mKorbel
mKorbel

Reputation: 109813

JTable knows Icon / ImageIcon.Class, then then no required any additional effort

Upvotes: 4

Related Questions