JTable - extend default CellRenderer

Question

I use a big JTable and I want to extend the CellRenderer for every Class, so every second Row has a gray Background, to make it more readable.

This gray Background for every second row should look something like this: http://i61.tinypic.com/of3sky.png

But I still want the default alignment for every Class and the default settings for isSelected and hasFocus.

The code for the Background should be simple, something like:

if(row % 2 == 0){
            super.setBackground(new Color(200, 200, 200));
        }
        else{
            super.setBackground(Color.WHITE);
        }

But how to get the default CellRenderer for every Class, and extend it in this way?

Thank you in advance!

what is the code that you are having in the custom cell render? — Thusitha Thilina Dayaratne, Aug 12 '14 at 09:27
Override `prepareRenderer()`, as shown int his [duplicate](http://stackoverflow.com/q/14075799/230513). — trashgod, Aug 12 '14 at 09:47

score 1 · Accepted Answer · answered Aug 12 '14 at 09:58

From JTable Alternate Row Background

To make a JTable render each row in a different color, you just have to extend the JTable's prepareRender method.

JTable table = new JTable(){
    public Component prepareRenderer(TableCellRenderer renderer, int row, int column){
        Component returnComp = super.prepareRenderer(renderer, row, column);
        Color alternateColor = new Color(252,242,206);
        Color whiteColor = Color.WHITE;
        if (!returnComp.getBackground().equals(getSelectionBackground())){
            Color bg = (row % 2 == 0 ? alternateColor : whiteColor);
            returnComp .setBackground(bg);
            bg = null;
        }
        return returnComp;
};

JTable - extend default CellRenderer

1 Answers1