Unexpected TableCellRende

  To: comp.lang.java.gui
hi all,

I wrote a customized renderer for a JTable but it is behaving
differently from what I expected: even if I just acted on the
BACKground color, when this render is selected the table does not show
the content of the cells. Double-clicking on a cell shows the data
correctly sorted in it but, as soon as the cell is de-selected, data
re-become invisible.

Here is the code: can anybody please tell me what am I doing wrong?

lor

****************************************************************************************************
import java.awt.*;
import java.awt.event.*;
import java.awt.Transparency;
import java.lang.Object.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;

public class UDP_JTable extends JTable
{
    public UDP_JTable(int rows, int cols)
    {
        super(rows, cols);
        for (int i=0; i<cols; i++)
        {
            getColumnModel().getColumn(i).setCellRenderer(new
UDRenderer());
        }
    }

    class UDRenderer extends DefaultTableCellRenderer implements
TableCellRenderer
    {
        public Component getTableCellRendererComponent(JTable table,
Object value, boolean isSelected, boolean hasFocus, int row, int
column)
        {
            setForeground(Color.BLACK);
            if(row != column)
            {
                if (row>column)
                {
                    setBackground(Color.CYAN);
                }
                else
                {
                    setBackground(Color.WHITE);
                }
            }
            else
            {
                setBackground(Color.YELLOW);
            }
            return this;
        }
    }

    public static void main(String[] args)
    {
    }
    
}

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