swing - How to set color to a certain row if certain conditions are met using java? -

i have jtable. (tablesummary). 1 of it's column expiry. want highlight row client expiry date lapsed on current date..

i got logic can't make row turn red or other colors. here's code:

         int count = (tablesummary.getrowcount());          numberformat formatter = new decimalformat("###,###");                    string no = formatter.format(count);          txtno.settext(no);              simpledateformat sdf = new simpledateformat("yyyy-mm-dd");                  calendar cal  = calendar.getinstance();                        string expdatestring = sdf.format(cal.gettime()).tostring();              for(int i=0; i<=tablesummary.getrowcount()-1; i++){                 string nnn= tablesummary.getmodel().getvalueat(i, 6).tostring();                    system.out.println(nnn);                 int res = nnn.compareto(expdatestring);                      if(res>=0){                         system.out.println("if ni " + (res>=0));                     }                     else{                          system.out.println("else ni" + (res>=0));                         rowrenderer.setbackground(color.red);                       }                                     } 

can me this? because it's 1 of main highlight of interface. in advance !! :)

in following link, can find example of action want do: http://www.roseindia.net/java/example/java/swing/sadingrows.shtml

you have override preparerenderer() on jtable , add backgroundcolor on component gets returned.

ps: future reference, easier if include more code. definition of rowrenderer =)

edit

instead of normal jtable table = new jtable(model) declaration, use following (change logic in preparerenderer method if want else alternating color):

jtable table = new jtable(model) {     public component preparerenderer(tablecellrenderer renderer, int index_row, int index_col) {         // current row         component comp = super.preparerenderer(renderer, index_row, index_col);         // index, not selected         if (index_row % 2 == 0 && !iscellselected(index_row, index_col)) {             comp.setbackground(color.lightgray);         } else {             comp.setbackground(color.white);         }         return comp;     } };