LocalDate plusWeeks() method in Java with Examples

The plusWeeks() method of LocalDate class in Java is used to add the number of specified week in this LocalDate and return a copy of LocalDate.For example, 2018-12-24 plus one week would result in 2018-12-31. This instance is immutable and unaffected by this method call.

Syntax:

public LocalDate plusWeeks(long weeksToAdd)

Parameters: This method accepts a single parameter weeksToAdd which represents the weeks to add, may be negative.



Return value: This method returns a LocalDate based on this date with the weeks added, not null.

Exception: This method throws DateTimeException if the result exceeds the supported date range.

Below programs illustrate the plusWeeks() method:

Program 1:

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// Java program to demonstrate
// LocalDate.plusWeeks() method
  
import java.time.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create a LocalDate object
        LocalDate date
            = LocalDate.parse("2018-12-26");
  
        // print instance
        System.out.println("LocalDate before"
                           + " adding weeks: " + date);
  
        // add 5 weeks
        LocalDate returnvalue
            = date.plusWeeks(5);
  
        // print result
        System.out.println("LocalDate after "
                           + " adding weeks: " + returnvalue);
    }
}

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Output:

LocalDate before adding weeks: 2018-12-26
LocalDate after  adding weeks: 2019-01-30

Program 2:

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// Java program to demonstrate
// LocalDate.plusWeeks() method
  
import java.time.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create a LocalDate object
        LocalDate date
            = LocalDate.parse("2018-12-24");
  
        // print instance
        System.out.println("LocalDate before"
                           + " adding weeks: " + date);
  
        // add -3 weeks
        LocalDate returnvalue
            = date.plusWeeks(-3);
  
        // print result
        System.out.println("LocalDate after "
                           + " adding weeks: " + returnvalue);
    }
}

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Output:

LocalDate before adding weeks: 2018-12-24
LocalDate after  adding weeks: 2018-12-03

Reference :
https://docs.oracle.com/javase/10/docs/api/java/time/LocalDate.html#plusWeeks(long)



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