指定日期的加减天数
public static String setDay(int num,String newDate) throws ParseException{
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
Date currdate = format.parse(newDate);
System.out.println("现在的日期是:" + format.format(currdate));
Calendar ca = Calendar.getInstance();
ca.set(Integer.parseInt(newDate.split("-")[0]), Integer.parseInt(newDate.split("-")[1]), Integer.parseInt(newDate.split("-")[2]));
ca.add(Calendar.DATE, num);// num为增加的天数,可以改变的
currdate = ca.getTime();
String enddate = format.format(currdate);
System.out.println("增加天数以后的日期:" + enddate);
return enddate;
}
setDay(1,"2017-02-20");