Question

I cant find the answer to this anywhere – i am sure it is really simple but im quite confused!

i want to change the colour of the cell background when the value changes.
I have written a cell renderer below:

public class CyanTableCellRenderer extends DefaultTableCellRenderer {

public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
    Component cell = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);

    cell.setBackground( Color.CYAN );
    return cell;
}
}

I want to pass the value of the cell from the event in the listener – to highlight the cell.

Can anyone help?

Answer 1

As suggested by @mKorbel, prepareRenderer() can apply changes to any selected renderer. Alternatively, you can condition the color based on the isSelected parameter of your renderer.

if (isSelect) {
    this.setBackground(Color.cyan);
}

If you just want to change the default background color for selected cells, alter the UIManager property Table.selectionBackground early in your program. This will affect all tables during execution.

UIManager.put("Table.selectionBackground", Color.cyan);