The isValidMonthDay() method of Year class in Java is used to check if this Year object and a month-day represented by a MonthDay provided as a parameter to the method together can form a valid date or not.
Syntax:
public boolean isValidMonthDay(MonthDay monthDay)
Parameter: This method accepts a single parameter monthDay which represents a month-day which is need to be examined with this Year object.
Return Value: It returns a boolean True value if this Year object and the given month-day represented by a MonthDay together can form a valid date otherwise it returns False.
Below programs illustrate the isValidMonthDay() method of Year in Java:
Program 1:
// Program to illustrate the isValidMonthDay() method  import java.util.*;import java.time.*;  public class GfG {    public static void main(String[] args)    {        // Create a Year object        Year thisYear = Year.of(2016);          // Creates a MonthDay object        MonthDay monthDay = MonthDay.of(9, 15);          // Check if this year object and given        // MonthDay forms a valid date        System.out.println(thisYear.isValidMonthDay(monthDay));    }} |
true
Program 2: In the below program, Year is mentioned as 1990 which is not a leap year but month-day represents a leap year. So, they together can not form a valid date so the method will return false.
// Program to illustrate the isValidMonthDay() method  import java.util.*;import java.time.*;  public class GfG {    public static void main(String[] args)    {        // Create a Year object        Year thisYear = Year.of(1990);          // Creates a MonthDay object        MonthDay monthDay = MonthDay.of(2, 29);          // Check if this year object and given        // MonthDay forms a valid date        System.out.println(thisYear.isValidMonthDay(monthDay));    }} |
false
Reference: https://docs.oracle.com/javase/8/docs/api/java/time/Year.html#isValidMonthDay-java.time.MonthDay-
