The getLong() method of LocalDate class in Java gets the era applicable at this date.
Syntax:
public long getLong(TemporalField field)
Parameter: This method accepts a single mandatory parameter field which specifies the field to get and not null.
Return Value: The function returns the value for the field.
Exceptions: The program throws three exceptions which are described as below:
- DateTimeException: thrown if a value for the field cannot be obtained or the value is outside the range of valid values for the field.
- UnsupportedTemporalTypeException: thrown if the field is not supported or the range of values exceeds an long.
- ArithmeticException: thrown if numeric overflow occurs
Below programs illustrate the getLong() method of LocalDate in Java:
Program 1:
// Program to illustrate the getLong() method  import java.util.*;import java.time.*;import java.time.temporal.ChronoField;  public class GfG {    public static void main(String[] args)    {        // Parses the date        LocalDate dt = LocalDate.parse("2018-11-27");          // Prints the day number        System.out.println(dt.getLong(ChronoField.DAY_OF_MONTH));    }} |
Output:
27
Program 2:
// Program to illustrate the getLong() method  import java.util.*;import java.time.*;import java.time.temporal.ChronoField;  public class GfG {    public static void main(String[] args)    {        // Parses the date        LocalDate dt = LocalDate.parse("2018-11-27");          // Prints the day number        System.out.println(dt.getLong(ChronoField.DAY_OF_YEAR));    }} |
Output:
331
Program 3:
// Program to illustrate the getLong() method// Exception Program  import java.util.*;import java.time.*;import java.time.temporal.ChronoField;  public class GfG {    public static void main(String[] args)    {        try {            LocalDate dt = LocalDate.parse("2017-01-32");            System.out.println(dt.getLong(ChronoField.DAY_OF_MONTH));        }        catch (Exception e) {            System.out.println(e);        }    }} |
Output:
java.time.format.DateTimeParseException: Text '2017-01-32' could not be parsed: Invalid value for DayOfMonth (valid values 1 - 28/31): 32
