Concat Same Name将不同的值JSON对象转换为唯一的

When I tried this:

当我尝试这个:

JSONObject xyz = new JSONObject();
JSONArray abc = new JSONArray();


while(rs.next())  
{    

    String a = rs.getString("enrollno");
    String b = rs.getString("name");
    xyz.put("no" , a);
    xyz.put("name" ,b); 

    abc.put(xyz);
    System.out.println(abc.toString());
}  
JSONObject xyz =