Here is a example code on how to read Json format datas for web game development.

How to Read JSON Format Data with JAVA

/** 
 *  
 * @param result JSON string 
 * @param name JSON array name 
 * @param fields The fields contained in the JSON string 
 * @return Returns a list of type List<Map<String,Object>>, Map<String,Object> corresponding to the structure "id": "1" 
 */  
public static List<Map<String, Object>> convertJSON2List(String result,  
        String name, String[] fields) {  
    List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();  
    try {  
        JSONArray array = new JSONObject(result).getJSONArray(name);  
 
        for (int i = 0; i < array.length(); i++) {  
            JSONObject object = (JSONObject) array.opt(i);  
            Map<String, Object> map = new HashMap<String, Object>();  
            for (String str : fields) {  
                map.put(str, object.get(str));  
            }  
            list.add(map);  
        }  
    } catch (JSONException e) {  
        Log.e("error", e.getMessage());  
    }  
    return list;  
}