java解析json数据成数组

用java怎么把这样的json数据解析成数组？
json数据的格式如下：
[{"a":"111","b":"222","c":"333"},{"a":"1000","b":"2000","c":"000"},{"a":"999","b":"300","c":"700"}]
我希望把a对应的数据全部放到一个数组中，把b对应的数据放到一个数组中，把c对应的数据放到一个数组中…………

 

 

import net.sf.json.JSONArray;

 

 

public class TestJson

{

    public static void main(String []args)

    {

           String json = "[{\"a\":\"111\",\"b\":\"222\",\"c\":\"333\"},{\"a\":\"1000\",\"b\":\"2000\",\"c\":\"000\"},{\"a\":\"999\",\"b\":\"300\",\"c\":\"700\"}]";

             JSONArray jsonArr = JSONArray.fromObject(json);

             String a[] = new String[jsonArr.size()];

             String b[] = new String[jsonArr.size()];

             String c[] = new String[jsonArr.size()];

             for (int i = 0; i < jsonArr.size(); i++) {

                 a[i] = jsonArr.getJSONObject(i).getString("a");

                 b[i] = jsonArr.getJSONObject(i).getString("b");

                 c[i] = jsonArr.getJSONObject(i).getString("c");

            }

            

             for (int i = 0; i < c.length; i++) {

                System.out.print(a[i]+" ");

                System.out.print(b[i]+" ");

                System.out.print(c[i]);

                System.out.println();

            }

     }

}