java - How to search SQL Database and display it on a JTable -

just title says, want search sql database , display on jtable using jtextfield on keyreleased. i've tried:

 private void jtextfield2keyreleased(java.awt.event.keyevent evt) {                                           try{      int = (int)jtable2.getmodel().getvalueat(jtable2.getselectedrow(), 0);         string query = "select fname roominfo fname '%" + jtextfield2.gettext() + "%'";          string url = "jdbc:mysql://localhost:3306/adv";          connection conn = drivermanager.getconnection(url,"root","sa");          statement st = conn.createstatement();         rs = st.executequery(query);          jtable2.setmodel(dbutils.resultsettotablemodel(rs));      conn.close();  }      catch (exception e) {          system.err.println("got exception! ");          joptionpane.showmessagedialog(null,"got exception!");         system.err.println(e.getmessage());      }         // todo add handling code here: }     

however, can't properly. seems problem? still doesn't search.

on keypressed:

try{       string url = "jdbc:mysql://localhost:3306/adv";          connection conn = drivermanager.getconnection(url,"root","sa");          statement st = conn.createstatement();         string query = "select customerno, fname, roominfo fname '%" + jtextfield2.gettext() + "%'";       rs = st.executequery(query);       jtable2.setmodel(dbutils.resultsettotablemodel(rs));       conn.close();  }      catch (exception e) {          joptionpane.showmessagedialog(null,"got exception!");         system.err.println(e.getmessage());      }