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 Âimportjava.time.*; ÂpublicclassGFG {    publicstaticvoidmain(String[] args)    { Â        // create a LocalDate object        LocalDate date            = LocalDate.parse("2018-11-13"); Â        // print instance        System.out.println("LocalDate before"                           + " adding days: "+ date); Â        // add 5 days        LocalDate returnvalue            = date.plusDays(5); Â        // print result        System.out.println("LocalDate after "                           + " adding days: "+ returnvalue);    }} | 
LocalDate before adding days: 2018-11-13 LocalDate after adding days: 2018-11-18
Program 2:
| // Java program to demonstrate// LocalDate.plusDays() method Âimportjava.time.*; ÂpublicclassGFG {    publicstaticvoidmain(String[] args)    { Â        // create a LocalDate object        LocalDate date            = LocalDate.parse("2018-12-24"); Â        // print instance        System.out.println("LocalDate before"                           + " adding days: "+ date); Â        // add 15 days        LocalDate returnvalue            = date.plusDays(15); Â        // print result        System.out.println("LocalDate after "                           + " adding days: "+ returnvalue);    }} | 
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)

 
                                    







