JTable Cell Renderer

Question

I\'m following some code I found, (Yes I understand how it works) It\'s from here :Code Link

What i\'m trying to do is set a cells Foreground color if the cells valu

Answer 1

Add this line:

c.setOpaque(true);

The Component returned by getTableCellRendererComponent must be opaque in order to see changes on background and foreground color. The problem here is also another: you are extending DefaultTableCellRenderer (that is a JComponent) but you are returning a Component that hasn't setOpaque method. I would refactor your code like this:

public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,int row,int col) {

    String s = table.getModel().getValueAt(row, col).toString();
    this.setOpaque(true);
    if (s.equalsIgnoreCase("yellow")) {
        this.setForeground(Color.YELLOW);
    }
    else {
        this.setBackground(Color.WHITE);
    }

    return this;
}