i want to display data by hql query from the database with there foreign key values in another table

here is a controller

@RequestMapping(value = "/admin/subjectandtopic", method = RequestMethod.GET) public ModelAndView showsubjects(ModelMap modelMap) {

        System.out.println("in controller");
        List<Subject> list = adminDataManipulationService.getSubjectList();
    /*  List<Classes> classList=adminDataManipulationService.getClassList();*/
        System.out.println("subject"+list);


        /*

        for (Classes c: classList) {
            classList.add((Classes) adminDataManipulationService.getClassList());
        }
        Map<String, Object> model= new HashMap<String, Object>();


        model.put("c", classList);*/

        if(list.isEmpty())
        {
            modelMap.addAttribute("Data not found..!!","msg");
            modelMap.addAttribute("list",list);
            return new ModelAndView("subjectlist"); 
        }else
        {
            return new ModelAndView("subjectlist", "list", list);
        }
    }

I want to display subject with theire class Id