Can't highlight cells after using CellRenderer

Question

I have used a CellRenderer for my column to change its background color but after i have set it i wasn't able to highlight any cell at my JTable. please help.
CellRenderer code:
class JJCellRenderer
extends DefaultTableCellRenderer
private int arrVerifyColumns[] = null;
     Color MyColor;
public JJCellRenderer(Color x)
MyColor = x;
}//end constructor
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column)
     this.setValue(String.valueOf(value));
     this.setFont(new Font("Arial", Font.PLAIN, 12));
     this.setSelected(isSelected);
this.setBackground(MyColor); // All columns verified were empty - set our background RED
return this;
}//end getTableCRC
}//end class JJCR

Answer 1

i would be pleased if you could let us take part of your solution.
i have a problem in the same manner like yours - just that i call my Editor-/RendererComponents from outside like:
public class MainWindow extends javax.swing.JFrame implements Searchable {
  public void find (Criteria crit) {
     for(int i=0; i<documentTable.getRowCount (); i++) {
      Object v = null;
        String vs = "";
        v = documentTable.getModel ().getValueAt (i,0);
        if(v!=null) {
          vs = v.toString ();
        if(vs.matches (crit.getExpression ())) {
          ((javax.swing.JTextField)documentTable.getCellEditor (i,0)
          .getTableCellEditorComponent (documentTable, v, false,
                      i,0)).setBackground (getSearchHighlightedBackgroundColor ());
}i have tried many other variations of this snippet like CellRenderer instead of CellEditor
or miscellaneous derived implementations of CellRenderer and CellEditor, other components - and hereafter leading to - other casts and other hightlighting-formats such as setFont and also repaint()ing after this.
the best result was a changing color/font after the party should be over (means: while focusing other rows after closing the searchDialog).
one possible way to explain this could be one shared component referenced by the return of getTableCell...Component(...) but a
  return new JTextField(val);
  // ...inside of this method should make clear that there is no object being shared.
the search for a solution continues ...
best regards
tb