List<Map<String ,Object>> list =new ArrayList<Map<String,Object>>();

        Map<String,Object> items1 =new HashMap<String,Object>();
        items1.put("A", 10);
        items1.put("B", 20);
        items1.put("C", 30);

        Map<String,Object> items2 =
 
new HashMap<String,Object>();
        items2.put("A", 10);
        items2.put("B", 20);
        items2.put("C", 30);

        Map<String,Object> items3 =new HashMap<String,Object>();
        items3.put("A", 10);
        items3.put("B", 20);
        items3.put("C", 30);

        list.add(items1);
        list
 
.add(items2);
        list.add(items3);

        for (Map s: list) {
            for (Object a: s.keySet()) {
                System.out.println(s.get(a));

            }

        }