ミリ秒を日、時、分、秒に変換

/**
	 *  
	 *           
	 * @author aoliu
	 * @param ms    
	 * @return
	 * @since JDK 1.6
	 */
	public static String formatTime(Long ms) {  
	    Integer ss = 1000;  
	    Integer mi = ss * 60;  
	    Integer hh = mi * 60;  
	    Integer dd = hh * 24;  
	  
	    Long day = ms / dd;  
	    Long hour = (ms - day * dd) / hh;  
	    Long minute = (ms - day * dd - hour * hh) / mi;  
	    Long second = (ms - day * dd - hour * hh - minute * mi) / ss;  
//	    Long milliSecond = ms - day * dd - hour * hh - minute * mi - second * ss;  
	      
	    StringBuilder sb = new StringBuilder();  
	    if(day > 0) {  
	        sb.append(day+" ");  
	    }  
	    if(hour > 0) {  
	        sb.append(hour+"  ");  
	    }  
	    if(minute > 0) {  
	        sb.append(minute+"  ");  
	    }  
	    if(second > 0) {  
	        sb.append(second+" ");  
	    }  
//	    if(milliSecond > 0) {  
//	        sb.append(milliSecond+"  ");  
//	    }  
	    return sb.toString();  
	}