Package com.illumon.util.calendar

Class DateStringUtils

java.lang.Object
com.illumon.util.calendar.DateStringUtils
public class DateStringUtils extends Object
Basic utilities for Date Strings. To comply with the ISO-8601 standard for dates, Strings should be of the form "yyyy-MM-dd" Quiet methods are functionally equivalent to their counterparts, but assume Date String validity to remove the overhead of checking.

  • Method Details

    • minusDays

      public static String minusDays(String date, int days)
      Subtract a number of days from a given date.
      Parameters:
      date - date
      days - days to subtract
      Returns:
      the day days before date

    • minusDaysQuiet

      public static String minusDaysQuiet(String date, int days)
      Subtract a number of days from a given date. This does not check that dates are formatted correctly.
      Parameters:
      date - date
      days - days to subtract
      Returns:
      the day days before date

    • plusDays

      public static String plusDays(String date, int days)
      Add a number of days from a given date.
      Parameters:
      date - date
      days - days to add
      Returns:
      the day days after date

    • plusDaysQuiet

      public static String plusDaysQuiet(String date, int days)
      Add a number of days from a given date. This does not check that dates are formatted correctly.
      Parameters:
      date - date
      days - days to add
      Returns:
      the day days after date

    • isBefore

      public static boolean isBefore(String date1, String date2)
      Is one date before another?
      Parameters:
      date1 - if null return false
      date2 - if null return false
      Returns:
      true if date1 is chronologically before date2; false otherwise.

    • isBeforeQuiet

      public static boolean isBeforeQuiet(String date1, String date2)
      Is one date before another? This does not check that dates are formatted correctly. Could be disastrous if date1 and date2 are not ISO-8601 compliant!
      Parameters:
      date1 - if null return false
      date2 - if null return false
      Returns:
      true if date1 is chronologically before date2; false otherwise.

    • isAfter

      public static boolean isAfter(String date1, String date2)
      Is one date after another?
      Parameters:
      date1 - if null return false
      date2 - if null return false
      Returns:
      true if date1 is chronologically after date2; false otherwise.

    • isAfterQuiet

      public static boolean isAfterQuiet(String date1, String date2)
      Is one date after another? This does not check that dates are formatted correctly. Could be disastrous if date1 and date2 are not ISO-8601 compliant!
      Parameters:
      date1 - if null return false
      date2 - if null return false
      Returns:
      true if date1 is chronologically after date2; false otherwise.

    • monthOfYear

      public static int monthOfYear(String date)
      Gets the month of the year for the date.
      Parameters:
      date - date; if null return NULL_INT
      Returns:
      month of the year for the date. Jan = 1, Dec = 12