The with(TemporalAdjuster adjuster) method of the ChronoLocalDateTime interface is used to adjust this date-time using TemporalAdjuster and after adjustment returns the copy of adjusted date-time. The adjustment takes place using the specified adjuster strategy object. This instance of ChronoLocalDateTime is immutable and unaffected by this method call. A simple adjuster uses to set one of the fields, such as the year field where A more complex adjuster might set the time to the last day of the year.
Syntax:
default ChronoLocalDateTime with(TemporalAdjuster adjuster)
Parameters: This method accepts adjuster as parameter which is the adjuster to use.
Return value: This method returns a ChronoLocalDateTime based on this with the adjustment made.
Exception: This method throws following Exceptions:
- DateTimeException – if the adjustment cannot be made.
- ArithmeticException – if numeric overflow occurs.
Below programs illustrate the with() method:
Program 1:
// Java program to demonstrate// ChronoLocalDateTime.with() method  import java.time.*;import java.time.chrono.*;import java.time.temporal.*;  public class GFG {    public static void main(String[] args)    {          // create ChronoLocalDateTime object        ChronoLocalDateTime time            = LocalDateTime                  .parse("2019-12-31T19:15:30");          // print instance        System.out.println("ChronoLocalDateTime before"                           + " adjustment: "                           + time);          // apply with method of ChronoLocalDateTime        ChronoLocalDateTime updatedlocal            = time.with(Month.OCTOBER)                  .with(TemporalAdjusters                            .firstDayOfMonth());          // print instance        System.out.println("ChronoLocalDateTime after"                           + " adjustment: "                           + updatedlocal);    }} |
ChronoLocalDateTime before adjustment: 2019-12-31T19:15:30 ChronoLocalDateTime after adjustment: 2019-10-01T19:15:30
Program 2:
// Java program to demonstrate// ChronoLocalDateTime.with() method  import java.time.*;import java.time.chrono.*;import java.time.temporal.*;  public class GFG {    public static void main(String[] args)    {          // create ChronoLocalDateTime object        ChronoLocalDateTime time            = LocalDateTime                  .parse("2018-10-25T23:12:31.123");          // print instance        System.out.println("ChronoLocalDateTime before"                           + " adjustment: "                           + time);          // apply with method of ChronoLocalDateTime        ChronoLocalDateTime updatedlocal            = time.with(Month.JANUARY)                  .with(TemporalAdjusters                            .firstDayOfMonth());          // print instance        System.out.println("ChronoLocalDateTime after"                           + " adjustment: "                           + updatedlocal);    }} |
ChronoLocalDateTime before adjustment: 2018-10-25T23:12:31.123 ChronoLocalDateTime after adjustment: 2018-01-01T23:12:31.123
