Java Month enum

In Java, the Month is an enum represents the 12 months of a year. In addition with the textual enum name, every month-of-year has an integer value.

Java Month enum Declaration

Let’s see the declaration of java.time.Month.

enum Constants

enum constant	Description
JANUARY	The singleton instance for the month of January with 31 days.
FEBRUARY	The singleton instance for the month of February with 28 days, or 29 in a leap year.
MARCH	The singleton instance for the month of March with 31 days.
APRIL	The singleton instance for the month of April with 30 days.
MAY	The singleton instance for the month of May with 31 days.
JUNE	The singleton instance for the month of June with 30 days.
JULY	The singleton instance for the month of July with 31 days.
AUGUST	The singleton instance for the month of August with 31 days.
SEPTEMBER	The singleton instance for the month of September with 30 days.
OCTOBER	The singleton instance for the month of October with 31 days.
NOVEMBER	The singleton instance for the month of November with 30 days.
DECEMBER	The singleton instance for the month of December with 31 days.

Methods of Java Month

Method	Description
int getValue()	It is used to get the month-of-year int value
int get(TemporalField field)	It is used to get the value of the specified field from this month-of-year as an int.
int length(boolean leapYear)	It is used to get the length of this month in days.
int maxLength()	It is used to get the maximum length of this month in days.
int minLength()	It is used to get the minimum length of this month in days.
Month minus(long months)	It is used to return the month-of-year that is the specified number of months before this one.
Month plus(long months)	It is used to return the month-of-year that is the specified number of quarters after this one.
static Month of(int month)	It is used to obtain an instance of Month from an int value.
Temporal adjustInto(Temporal temporal)	It adjusts the specified temporal object to have the same month-of-year as this object.
int firstDayOfYear(boolean leapYear)	It gets the day-of-year corresponding to the first day of this month.
Month firstMonthOfQuarter()	It gets the month corresponding to the first month of this quarter.
static Month from(TemporalAccessor temporal)	It obtains an instance of Month from a temporal object.
String getDisplayName(TextStyle style, Locale locale)	It gets the textual representation, such as ‘Jan’ or ‘December’.
long getLong(TemporalField field)	It gets the value of the specified field from this month-of-year as a long.
boolean isSupported(TemporalField field)	It checks if the specified field is supported.
R query(TemporalQuery query)	It queries the offset using the specified query.
ValueRange range(TemporalField field)	It gets the range of valid values for the specified field.
static Month valueOf(String name)	It returns the enum constant of this type with the specified name.
static Month[] values()	It returns an array containing the constants of this enum type, in the order they are declared.

Java Month enum Example

MonthEnumExample1.java

  import java.time.*;    import java.time.temporal.*;    public class MonthEnumExample1 {        public static void main(String[] args) {            Month month = Month.valueOf(“January”.toUpperCase());            System.out.printf(“For the month of %s all Sunday are:%n”, month);            LocalDate localdate = Year.now().atMonth(month).atDay(1).            with(TemporalAdjusters.firstInMonth(DayOfWeek.SUNDAY));            Month mi = localdate.getMonth();            while (mi == month) {                System.out.printf(“%s%n”, localdate);                localdate = localdate.with(TemporalAdjusters.next(DayOfWeek.SUNDAY));                mi = localdate.getMonth();            }        }    }    

Output:

For the month of JANUARY all Sunday are:  2017-01-01  2017-01-08  2017-01-15  2017-01-22  2017-01-29

Java Month enum Example: getValue()

MonthEnumExample2.java

  import java.time.*;    public class MonthEnumExample2 {      public static void main(String[] args) {        Month month = Month.from(LocalDate.now());        System.out.println(month.getValue());        System.out.println(month.name());      }    }    

Output:

1  JANUARY

Java Month enum Example: minus()

MonthEnumExample3.java

  import java.time.*;    public class MonthEnumExample3 {      public static void main(String[] args) {        Month month = Month.from(LocalDate.now());          System.out.println(month.minus(2));      }    }    

Output:

NOVEMBER

Java Month enum Example: plus()

MonthEnumExample4.java

  import java.time.*;    public class MonthEnumExample4 {      public static void main(String[] args) {        Month month = Month.from(LocalDate.now());          System.out.println(month.plus(2));      }    }    

Output:

MARCH

Java Month enum Example: length()

MonthEnumExample5.java

  import java.time.*;    public class MonthEnumExample5 {      public static void main(String[] args) {        Month month = Month.from(LocalDate.now());          System.out.println(“Total Number of days: “+month.length(true));      }    }    

Output:

Total Number of days: 31

Next TopicJava util.date

Java Month enum

Java Month enum

Java Month enum Declaration

enum Constants

Methods of Java Month

Java Month enum Example

Java Month enum Example: getValue()

Java Month enum Example: minus()

Java Month enum Example: plus()

Java Month enum Example: length()

Java Static Import

Java BoxLayout

You may also like