The plusDays() method of a LocalDate class in Java is used to add the number of specified day in this LocalDate and return a copy of LocalDate. For example, 2018-12-31 plus one day would result in 2019-01-01. This instance is immutable and unaffected by this method call.
Syntax:
public LocalDate plusDays(long daysToAdd)
Parameters: This method accepts a single parameter daysToAdd which represents the days to add, may be negative.
Return Value: This method returns a LocalDate based on this date with the days added, not null.
Exception: This method throws DateTimeException if the result exceeds the supported date range.
Below programs illustrate the plusDays() method:
Program 1:
// Java program to demonstrate// LocalDate.plusDays() method  import java.time.*;  public class GFG {    public static void main(String[] args)    {          // create a LocalDate object        LocalDate date            = LocalDate.parse("2018-11-13");          // print instance        System.out.println("LocalDate before"                           + " adding days: " + date);          // add 5 days        LocalDate returnvalue            = date.plusDays(5);          // print result        System.out.println("LocalDate after "                           + " adding days: " + returnvalue);    }} |
Output:
LocalDate before adding days: 2018-11-13 LocalDate after adding days: 2018-11-18
Program 2:
// Java program to demonstrate// LocalDate.plusDays() 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 days: " + date);          // add 15 days        LocalDate returnvalue            = date.plusDays(15);          // print result        System.out.println("LocalDate after "                           + " adding days: " + returnvalue);    }} |
Output:
LocalDate before adding days: 2018-12-24 LocalDate after adding days: 2019-01-08
Reference:
https://docs.oracle.com/javase/10/docs/api/java/time/LocalDate.html#plusDays(long)
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