The firstDayOfYear() is a built-in method of the Month ENUM which is used to get the day of year corresponding to the first day of this month.
public int firstDayOfYear(boolean leapYear)
Parameters: This method accepts a single parameter leapYear, which is a boolean flag variable indicating whether this Year is a leap year or not.
Return Value: This method returns the day-of-year corresponding to the first day of this month.
Below programs illustrate the above method:
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