The isSupported() method is a built-in method of the Month ENUM which is used to check if the specified field is supported or not. This method accepts a fields as a parameter and returns true or false based on whether the field is supported or not.
Syntax:
public boolean isSupported(TemporalField field)
Parameters: This method accepts a single parameter field, which is to be checked if it is supported or not.
Return Value: This method returns a boolean value True if the field is supported otherwise it returns False.
Below programs illustrate the above method:
Program 1:
import java.time.*;import java.time.Month;import java.time.temporal.ChronoField;  class monthEnum {    public static void main(String[] args)    {        // Create a month instance        Month month = Month.of(5);          // check if the field is valid        if (month.isSupported(ChronoField.MONTH_OF_YEAR))            System.out.println("This field is supported!");        else            System.out.println("This field is not supported!");    }} |
Output:
This field is supported!
Program 2:
import java.time.*;import java.time.Month;import java.time.temporal.ChronoField;  class monthEnum {    public static void main(String[] args)    {        // Create a month instance        Month month = Month.of(5);          // check if the field is valid        if (month.isSupported(ChronoField.DAY_OF_WEEK))            System.out.println("This field is supported!");        else            System.out.println("This field is not supported!");    }} |
Output:
This field is not supported!
Reference: https://www.tutorialspoint.com/javatime/javatime_month_issupported.htm
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