The minusWeeks() method of a LocalDate class in Java is used to subtract the number of specified week from this LocalDate and return a copy of LocalDate.For example, 2018-12-24 minus one week would result in 2018-12-17. This instance is immutable and unaffected by this method call.
Syntax:
public LocalDate minusWeeks(long weeksToSubtract)
Parameters: This method accepts a single parameter weeksToSubtract which represents the weeks to subtract, may be negative.
Return Value: This method returns a LocalDate based on this date with the weeks subtracted, not null.
Exception: This method throws DateTimeException if the result exceeds the supported date range.
Below programs illustrate the minusWeeks() method:
Program 1:
// Java program to demonstrate// LocalDate.minusWeeks() 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"                           + " subtracting weeks: " + date);          // subtract 2 weeks        LocalDate returnvalue            = date.minusWeeks(2);          // print result        System.out.println("LocalDate after "                           + " subtracting weeks: " + returnvalue);    }} |
LocalDate before subtracting weeks: 2018-12-26 LocalDate after subtracting weeks: 2018-12-12
Program 2:
// Java program to demonstrate// LocalDate.minusWeeks() 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"                           + " subtracting weeks: " + date);          // subtract -13 weeks        LocalDate returnvalue            = date.minusWeeks(-13);          // print result        System.out.println("LocalDate after "                           + " subtracting weeks: " + returnvalue);    }} |
LocalDate before subtracting weeks: 2018-12-24 LocalDate after subtracting weeks: 2019-03-25
Reference:
https://docs.oracle.com/javase/10/docs/api/java/time/LocalDate.html#minusWeeks(long)
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