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LocalDate getLong() method in Java with Examples

  • Last Updated : 28 Nov, 2018

The getLong() method of LocalDate class in Java gets the era applicable at this date.

Syntax:

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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:

  1. DateTimeException: thrown if a value for the field cannot be obtained or the value is outside the range of valid values for the field.
  2. UnsupportedTemporalTypeException: thrown if the field is not supported or the range of values exceeds an long.
  3. 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

Reference: https://docs.oracle.com/javase/10/docs/api/java/time/LocalDate.html#getLong(java.time.temporal.TemporalField)




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