日期工具类

 

public static String formatShort(Date date) {
        Date now = new Date();
        long time = now.getTime() - date.getTime();
        if (time < 60 * 60 * 1000) {
            return (time / 1000 / 60) + "分钟前";
        } else if (time < 24 * 60 * 60 * 1000) {
            return (time / 1000 / 60 / 60) + "小时前";
        } else {
            return (time / 1000 / 60 / 60 / 24) + "天前";
        }
    }
    
    /**
	 * 将得到当前时间 格式 “2011年8月15日 星期一”
	 * 
	 * @return
	 */
	public static String getTimeString() {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(new Date());
		return String.format("%s年%s月%s日 %s", calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH)+1, calendar.get(Calendar.DAY_OF_MONTH), dayOfWeek(calendar));
	}
	
	public static String dayOfWeek(Calendar calendar){   
		final String dayNames[] = { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五","星期六" };   
		int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK)-1;   
		if(dayOfWeek <0)dayOfWeek=0;   
		return dayNames[dayOfWeek];
	}