JList doesn't constantly refresh

I'm having a problem updating my jLists. I'm trying to update it using
the jList.setListData(array) while in a loop so that it's constantly
updated. Any suggestions or strategies are greatly appreciated. Thanks

private void jButton3MouseClicked(java.awt.event.MouseEvent evt) {
        int number2=4;
        double arrivalrate2=.000003;
        do{
                if(Math.random()<arrivalrate2)
                {
                    Random rand2=new Random();
                    number2=rand2.nextInt(2);
                int lanenumberassigned;
                Auto auto=getAuto();
                LaneStatusRunnable lsrunnable=new
LaneStatusRunnable(lane1queue,lane2queue,lane3queue,lane4queue,lane5queue,lane6queue);
                lanenumberassigned=lsrunnable.getLaneAssignment();
                switch(lanenumberassigned)
                {
                    case 1:
                        lane1queue.add(auto);
                       jList1.setListData(lane1queue.toArray());
                        System.out.println("Lane 1 assigned");
                        break;
                    case 2:
                        lane2queue.add(auto);
                        jList2.setListData(lane2queue.toArray());
                        System.out.println("Lane 2 assigned");
                        break;
                    case 3:
                        lane3queue.add(auto);
                        jList3.setListData(lane3queue.toArray());
                        System.out.println("Lane 3 assigned");
                        break;
                    case 4:
                        lane4queue.add(auto);
                        jList4.setListData(lane4queue.toArray());
                        System.out.println("Lane 4 assigned");
                        break;
                    case 5:
                        lane5queue.add(auto);
                        jList5.setListData(lane5queue.toArray());
                        System.out.println("Lane 5 assigned");
                        break;
                    case 6:
                        lane6queue.add(auto);
                        jList6.setListData(lane6queue.toArray());
                        System.out.println("Lane 6 assigned");
                        break;

                    default:
                        System.out.println("Error at lanenumberassigned
switch");
                        break;

                }
                }
        }while(number2!=5);
}