Set Jtable / Column Renderer for Boolean

Question

Right now my Boolean values ​​for my JTable display are like JCheckBoxes . This is usually normal, but I would like to display them as an alternate line or image. I can make them display as true / false, but I would like to display them as a check mark (✔) if true, and nothing if false. Perhaps an image, but it allows you to create a string first ...

Answer 1

Create your own renderer. Extend DefaultTableCellRenderer and add your own code to display whatever you want. It can be a custom icon or if the “checkmark” is a printed symbol, than you can simply set the visualizer text to the corresponding symbol.

Read the JTable API and you will find a link to the Swing tutorial on How to Use Tables, which will provide more information about visualizers.

If you need more help, post an SSCCE , showing the problems encountered when creating the render.

Edit:

The tutorial shows how to add a custom renderer for a given class, but it does not show how to add a custom renderer for a specific column. You will use:

 table.getColumnModel().getColumn(...).setCellRenderer(...); 

Answer 2

Example:

 table.setDefaultRenderer(Boolean.class, new BooleanRenderer(true)); 

with BooleanRenderer

 public class BooleanRenderer extends JLabel implements TableCellRenderer { ..... }