java-拼串计算日期时间差

 1 /**
 2      * 组织时间差
 3      * @tags @return
 4      * @exception
 5      * @author wanghc
 6      * @date 2015-7-22 下午6:49:26
 7      * @return String
 8      */
 9     private String setDateDifferenceStr(Date startTime,Date endTime){
10         StringBuffer sb = new StringBuffer();
11         if(ParamValidator.validatorParamsIsEmpty(startTime,endTime)){
12             sb.append("00:00:00");
13             return sb.toString();
14         }
15         Long l = endTime.getTime() - startTime.getTime();
16         long ss=l/(1000); //共计秒数
17         int MM = (int)ss/60;   //共计分钟数
18         int hh=(int)ss/3600;  //共计小时数
19         //int dd=(int)hh/24;   //共计天数
20         if((hh%24) >=0 && (hh%24) < 10){
21             sb.append("0"+(hh%24));
22         }else{
            sb.append(hh%24);
           }
23         if((MM%60) >=0 && (MM%60) < 10){
24             sb.append(":0"+(MM%60));
25         }else{
            sb.append(":"+(MM%60));
        　 }
26         if((ss%60) >=0 && (ss%60) < 10){
27             sb.append(":0"+(ss%60));
28         }else{
29             sb.append(":"+(ss%60));
30         }
31         return sb.toString();
32     }