try {
pt=conn.prepareStatement("select uname,upwd from users where uname=?");
pt.setString(1, usera.getUname());
rs=pt.executeQuery();
if(rs.next()){
us=new UserBean(rs.getString(1),rs.getString(2));
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}