Java计算时间差详解编程语言

/** 
     * 计算时间差 
     * @param begin 
     * @param end 
     * @return 返回格式,"hh:mm:ss" 
     */ 
    public String getTimeDifference(Date begin,Date end) { 
        long between=(end.getTime()-begin.getTime())/1000;//除以1000是为了转换成秒 
        long hour=between%(24*3600)/3600; 
        long minute=between%3600/60; 
        long second=between%60; 
          
        StringBuffer time=new StringBuffer(); 
        if(hour!=0){ 
            time.append(hour+":"); 
        } 
        if(time.length()!=0){ 
            time.append(String.format("%02d:", minute)); 
        }else if(minute!=0){ 
            time.append(String.format("%d:", minute)); 
        } 
        if(time.length()!=0){ 
            time.append(String.format("%02d", second)); 
        }else{ 
            time.append(second); 
        } 
        return time.toString(); 
    }