default boolean isSupported(TemporalUnit unit)

// Program to illustrate the
// isSupported(TemporalUnit) method
  
import java.util.*;
import java.time.*;
import java.time.chrono.*;
import java.time.temporal.ChronoUnit;
  
public class GfG {
    public static void main(String[] args)
    {
        // Parses the date
        ChronoZonedDateTime dt1
            = ZonedDateTime.parse(
                "2018-12-06T19:21:12.123+05:30[Asia/Calcutta]");
  
        // Prints the date
        System.out.println(dt1);
  
        System.out.println(dt1.isSupported(ChronoUnit.DAYS));
    }
}

2018-12-06T19:21:12.123+05:30[Asia/Calcutta]
true