java获得指定日期的前一天，后一天的代码


            复制代码 代码如下:/** * 获得指定日期的前一天 * @param specifiedDay * @return * @throws Exception */ public static String getSpecifiedDayBefore(String specifiedDay){ //SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd"); Calendar c = Calendar.getInstance(); Date date=null; try { date = new SimpleDateFormat("yy-MM-dd").parse(specifiedDay); } catch (ParseException e) { e.printStackTrace(); } c.setTime(date); int day=c.get(Calendar.DATE); c.set(Calendar.DATE,day-1); String dayBefore=new SimpleDateFormat("yyyy-MM-dd").format(c.getTime()); return dayBefore; } /** * 获得指定日期的后一天 * @param specifiedDay * @return */ public static String getSpecifiedDayAfter(String specifiedDay){ Calendar c = Calendar.getInstance(); Date date=null; try { date = new SimpleDateFormat("yy-MM-dd").parse(specifiedDay); } catch (ParseException e) { e.printStackTrace(); } c.setTime(date); int day=c.get(Calendar.DATE); c.set(Calendar.DATE,day+1); String dayAfter=new SimpleDateFormat("yyyy-MM-dd").format(c.getTime()); return dayAfter; }