TableCellRenderer confusion

Question

I have a custom TableCellRenderer and I have the getTableCellRendererComponent method in it in order to set the background to a different colour. However, this sets the background of the whole column, not a single cell.
How can I isolate a single cell?
I want to do this, but I am not selecting the cell in the table at all. It is independant of user interaction with the table. I want the background to change after values have come back from a database, simply to highlight these values to the user.
Anyone have any ideas?
Thanks in advance

Answer 1

I'm not sure I understand. I can isolate the row and column, and I set the component based on this, but all in that column seem to be set, even with an if statement. Here's the code:
Its alright, I've got it sorted now, but thankyou.
For anyone that's interested:
In my custom cell renderer I have a Vector which will store int values representing rows that have changed and need highlighting. In the calling class, if a user updates this row, I call CapmTableCellRenderer.addCellChanged(rowInt);
I can now use this Vector to check if the row Int in getTableCellRendererComponent is in the Vector (i.e is a row changed by the user)
In the below example I change the font to bold if it has been changed, and keep it as normal if it has not
public class CapmTableCellRenderer extends DefaultTableCellRenderer implements TableCellRenderer{
public Vector rowsChanged = new Vector();
public JTable my_table;
public Object my_value;
public CapmTableCellRenderer() {
public Component getTableCellRendererComponent(JTable table,
Object value,
boolean isSelected,
boolean hasFocus,int row,int column)
JLabel myComp = (JLabel) super.getTableCellRendererComponent(table,
          value, isSelected, hasFocus, row, column);
//interogate vector for matching row int
for (int y=0; y< rowsChanged.size(); y++){
if (row == ((Integer)rowsChanged.elementAt(y)).intValue()) {
myComp.setFont(new Font(myComp.getFont().getFontName(),1,myComp.getFont().getSize()));
else {
myComp.setFont(new Font(myComp.getFont().getFontName(),0,myComp.getFont().getSize()));
return this;
public void addCellChanged(int cellRow) {
rowsChanged.add(new Integer(cellRow));
}