Howto set tool tip for a row in JTable

Question

I want to set a seperate tool tip for each of the rows in JTable. I tried getting cell renderer of all columns in a row and then setting tool tip for them. I expected that setting tool tip for a cell renderer will set tool tip for that cell. Thus setting tool tip for all the cells in a row will indirectly set tool tip for that row. But it does not happen that way. By setting a tool tip for a renderer it will use that tool tip for all those cells which use that renderer.
Is there any problem in my approach or we cannot do this in Java.
regards.

Answer 1

Thanks.You're wellcome.
>
I just saw this method in JComponent and realized this
solution.
But then thought that for doing this i'll have to
create my JTable class for just overiding one method
thereby increasing one more level of abstraction.Well, you could override the method in an inner class if I understand you correctly in assuming that you don't want to create a JTable as new separate class. You could do this:
JTable yourtable = new JTable() {
  public String getToolTipText( MouseEvent e ) {
    return getToolTipForRow( rowAtPoint( e.getPoint() ));
// some where else in your class
getToolTipForRow( int row ) {
  // determine your tooltip here
}I think this would be a bit nicer and slightly faster approach because as far as I understand the getToolTipText() method is called after a similar MouseEvent for every JComponent i.e. a small pause of cursor movement over the component in question. I admit that I haven't tested either approach myself but noticed that JTable actually overrides the getToolTipText( MouseEvent e) method already. In your code you determine and set the tooltip every time the mouse moves. If you override getToolTipText( MouseEvent e) you have to determine the tooltip text only when the tooltip is actually about to be shown.
Regards, JMorko