Date firstDate=new Date(((java.util.Date)tableModel.getValueAt(i,2)).getTime());
Date lastDate=new Date(((java.util.Date)tableModel.getValueAt(i,3)).getTime());
Date firstDate=new Date(((java.util.Date)tableModel.getValueAt(i,2)).getTime());
Date lastDate=new Date(((java.util.Date)tableModel.getValueAt(i,3)).getTime());