java - Result Set not always being shown in the JTable -

i creating application in java retrieves information mysql database , displays in jtable on screen.

the code using , put information defaultlistmodel<> shown below. defaultlistmodel<> fed jtable displays information onto screen.

swingworker<void, void> worker = new swingworker< void, void>() {          @override         public void doinbackground() {              string sql = "select * addabill";              try {                 statement stmt = globalvars.conn.createstatement();                  resultset rs = stmt.executequery(sql);                  menuoptions.clear();                  while(rs.next()){                      menuoptions.addelement(rs.getstring(1) + " - " + rs.getstring(2));                 }                  rs.close();                 stmt.close();             }              catch (sqlexception e) {                 system.out.println("an error detected! :/");             }              return null;         }          @override         public void done(){             loadinggif.setvisible(false);         }      };      worker.execute(); 

the issue having information displayed onto screen , isn't. since there no change in query used assuming mysql connection.

the jtable , menuoptions setup this

menuoptions = new defaultlistmodel<>(); menuoptions.addelement("");  menulist = new jlist<>(menuoptions); menulist.setfont(new font("myriad hebrew", font.plain, 32)); menulist.setbackground(color.decode("#005952")); menulist.setforeground(color.decode("#bec423")); menulist.setselectionbackground(color.decode("#660033")); menulist.setselectionforeground(color.decode("#ffffff")); 

so question wondering how can make sure information displayed on screen. picture of when displayed , not displayed shown below.

displayed:

not displayed:

on final note information show have keep on re-running code until shown.

any appreciated.

@trashgod @mkorbel

thanks guys, have solved issue adding information table done() function. code below

swingworker<void, void> worker = new swingworker< void, void>() {          string[] billitems = null;          @override         public void doinbackground() {              string sql = "select * addabill";              try {                 statement stmt = globalvars.conn.createstatement();                  resultset rs = stmt.executequery(sql);                  //set cursor last position                 rs.last();                  int totalrows = rs.getrow();                  billitems = new string[totalrows];                  //set cursor start                 rs.beforefirst();                  while(rs.next()){                     int rownum = rs.getrow() - 1;                     billitems[rownum] = rs.getstring(1) + " - " + rs.getstring(2);                 }                  rs.close();                 stmt.close();             }              catch (sqlexception e) {                 system.out.println("an error detected! :/");             }              return null;         }          @override         public void done(){             menuoptions.clear();              for(int = 0; < billitems.length; i++){                 menuoptions.addelement(billitems[i]);             }              loadinggif.setvisible(false);         }      }; 

thanks,

thomas.