java.time.YearMonth.isSupported(TemporalUnit unit)

package com.codingdict;

import java.time.YearMonth;
import java.time.temporal.ChronoUnit;

public class YearMonthDemo {
   public static void main(String[] args) {

      YearMonth date = YearMonth.of(2020,11);
      System.out.println(date.isSupported(ChronoUnit.ERAS));  
   }
}