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ChronoLocalDate until(Temporal,TemporalUnit) Method in Java with Examples
  • Last Updated : 29 Apr, 2019

until() method of the ChronoLocalDate interface used to calculate the amount of time between two ChronoLocalDate objects using TemporalUnit. The start and end points are this and the specified ChronoLocalDate passed as a parameter. The result will be negative if the end is before the start. The calculation returns a whole number, representing the number of complete units between the two ChronoLocalDate. This instance is immutable and unaffected by this method call.

Syntax:

public long until(Temporal endExclusive, TemporalUnit unit)

Parameters: This method accepts two parameters endExclusive which is the end date, exclusive, which is converted to a ChronoLocalDate and unit which is the unit to measure the amount.

Return value: This method returns the amount of time between this ChronoLocalDate and the end ChronoLocalDate.

Exception:This method throws following Exceptions:



  • DateTimeException – if the amount cannot be calculated, or the ending temporal cannot be converted to a ChronoLocalDate.
  • UnsupportedTemporalTypeException – if the unit is not supported.
  • ArithmeticException – if numeric overflow occurs.

Below programs illustrate the until() method:
Program 1:

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// Java program to demonstrate
// ChronoLocalDate.until() method
  
import java.time.*;
import java.time.temporal.*;
import java.time.chrono.*;
  
public class GFG {
    public static void main(String[] args)
    {
        // create ChronoLocalDate objects
        ChronoLocalDate l1
            = LocalDate
                  .parse("2018-12-06");
  
        ChronoLocalDate l2
            = LocalDate
                  .parse("2018-10-25");
  
        // apply until the method of LocalDate class
        long result
            = l2.until(l1,
                       ChronoUnit.DAYS);
  
        // print results
        System.out.println("Result in DAYS: "
                           + result);
    }
}

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Output:

Result in DAYS: 42

Program 2:

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// Java program to demonstrate
// ChronoLocalDate.until() method
  
import java.time.*;
import java.time.temporal.*;
import java.time.chrono.*;
  
public class GFG {
    public static void main(String[] args)
    {
        // create ChronoLocalDate objects
        ChronoLocalDate l1
            = LocalDate
                  .parse("2018-12-06");
  
        ChronoLocalDate l2
            = LocalDate
                  .parse("2018-10-25");
  
        // apply until()
        long result
            = l2.until(l1,
                       ChronoUnit.MONTHS);
  
        // print results
        System.out.println("Result in MONTHS: "
                           + result);
    }
}

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Output:

Result in MONTHS: 1

References:
https://docs.oracle.com/javase/9/docs/api/java/time/chrono/ChronoLocalDate.html#until-java.time.temporal.Temporal-java.time.temporal.TemporalUnit-

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