Java examples to add or subtract days, months or years from a given date using various date-time classes. If your requirement is to add or subtract only the business days then read the linked article. 1. Add or Subtract Days, Months, Years to Date since Java 8. This recommended approach if we are using JDK 1.8 or later.
Since month m is m-2 mod 12, january would be year-1(shifting to previous year since month is getting negative) and month-2 (i.e 12-2 = 10 , 12 is because year is shifted to previous) month, similarly february would be year-1 and month 11 (12-1=11), march will be same year and month 3-2 =1. d = days of the month, 178. Date and time formats are well described below. SimpleDateFormat (Java Platform SE 7) - Date and Time Patterns. There could be n Number of formats you can possibly make. ex - dd/MM/yyyy or YYYY-'W'ww-u or you can mix and match the letters to achieve your required pattern. Pattern letters are as follow. Java has an extraordinarily powerful and flexible enum facility. If unfamiliar, study the Oracle Tutorial. DayOfWeek dow = ld.getDayOfWeek () ; Generate a String with the name of the day of the week. No need to hard-code English. Let java.time automatically localize for you. Calendar の getInstance メソッドは、 Calendar オブジェクトを返しますが、このカレンダフィールドは現在の日付と時刻に初期化されています。. Calendar rightNow = Calendar.getInstance (); Calendar オブジェクトでは、特定の言語およびカレンダスタイル (日本のグレゴリオ暦 From the documentation of Date#getYear(): Returns a value that is the result of subtracting 1900 from the year that contains or begins with the instant in time represented by this Date object, as interpreted in the local time zone. So you'd have to add 1900 to UQnk0X1.