Java中对JSONArray中的时间对象进行排序

package Test;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONException;
import com.alibaba.fastjson.JSONObject;

/**
 * Java中对JSONArray中时间对象进行排序
 *
 */
public class Test  {
    public static void main(String[] args) {
        String jsonArrStr = "[ { \"accidentDate\": \"2016-05-25\", \"Name\": \"zhangChan\" },{ \"accidentDate\": \"2016-05-23\", \"Name\": \"alanLuke\" },{ \"accidentDate\": \"2016-05-26\", \"Name\": \"sansiny\" }]";
        String jsonArraySort = jsonArraySort(jsonArrStr);
        System.out.println("逆序后："+jsonArraySort);
    }

    /**
     * 按照JSONArray中的对象的某个字段进行排序(采用fastJson)
     * @param jsonArrStr json数组字符串
     */
    public static String jsonArraySort(String jsonArrStr) {
        JSONArray jsonArr = JSON.parseArray(jsonArrStr);
        JSONArray sortedJsonArray = new JSONArray();
        List jsonValues = new ArrayList();
        for (int i = 0; i < jsonArr.size(); i++) {
            jsonValues.add(jsonArr.getJSONObject(i));
        }
        Collections.sort(jsonValues, new Comparator() {
            private static final String KEY_NAME = "accidentDate";
            String string1;
            String string2;
            @Override
            public int compare(JSONObject a, JSONObject b) {
        try {
                     string1= a.getString(KEY_NAME).replaceAll("-", "");
                     string2= b.getString(KEY_NAME).replaceAll("-", "");
                } catch (JSONException e) {
                    // 处理异常
                }
                    //这里是按照时间逆序排列,不加负号为正序排列
                return -string1.compareTo(string2);
            }
        });
        for (int i = 0; i < jsonArr.size(); i++) {
            sortedJsonArray.add(jsonValues.get(i));
        }
        return sortedJsonArray.toString();
    }

}