Java将毫秒值转为时分秒 - 好文

public String getGapTime(long time){
       long hours = time / (1000 * 60 * 60);
       long minutes = (time-hours*(1000 * 60 * 60 ))/(1000* 60);
       String diffTime="";
       if(minutes<10){
           diffTime=hours+":0"+minutes;
       }else{
           diffTime=hours+":"+minutes;
       }
       return diffTime;
   }