Change the cell color in JTable?

Question

Hi all,
I'm trying to do that, the user make a selection of multiple cells in a table. And when it press enter, I whant to change the color of the selected cells.(the isEditable of JTable it's already overwritten to return always false)
I have already make my own CellRender, my problem is, because the cell remains unchanged the render are not called...
Thanks,
NeuralC

Answer 1

You need not access this function when you want to paint a cell. This is how your code while instantiating the table should typically look like.
JTable table = new JTable(model);
table.setDefaultRenderer(Object.class,new MyCellRenderer());
and
public class MyTableCellRenderer extends JLabel implements TableCellRenderer
public MyTableCellRenderer
setOpaque(true);
setBackground(Color.white);
public Component getTable.....(JTable table,Object value,......) //fill all these things
setFont(table.getFont());
if(value != null && isSelected)
setHorizontalAlignment(SwingConstants.RIGHT);
setText(value);
return this;
When you set MyTableCellRenderer to the table, the getTableCellRedererComponent method is called automatically to renderer the cells and only the selected cells will be hightlighted in blue color. For a better understanding of how tables work and their corresponding Renderers work, you might have to read the tutorial on JTable. Do that as that would help you in removing all the confusion.
Thanks,
Kalyan