The withSecond() method of LocalDateTime class in Java is used to get a copy of this LocalDateTime with the seconds changed to the seconds passed as the parameter to this method. The remaining values of this LocalDateTime remains the same.
Syntax:
public LocalDateTime withSecond(int seconds)
Parameter: This method accepts a single mandatory parameter seconds which specifies the seconds to be set in the resultant LocalDateTime instance. The value of this seconds can range from 0 to 59.
Returns: The function returns a LocalDateTime instance with the seconds changed to the seconds passed as the parameter to this method. The remaining values of this LocalDateTime remains the same.
Exceptions: The function throws a DateTimeException if the seconds value is invalid.
Below programs illustrate the LocalDateTime.withSecond() method:
Program 1:
// Program to illustrate the withSecond() method  import java.util.*;import java.time.*;  public class GfG {    public static void main(String[] args)    {        // Get the LocalDateTime instance        LocalDateTime dt = LocalDateTime.now();          // Get the String representation of this LocalDateTime        System.out.println("Original LocalDateTime: "                           + dt.toString());          // Get a new LocalDateTime with seconds 0        System.out.println("New LocalDateTime: "                           + dt.withSecond(0));    }} |
Original LocalDateTime: 2018-11-30T10:39:52.924 New LocalDateTime: 2018-11-30T10:39:00.924
Program 2:
// Program to illustrate the withSecond() method  import java.util.*;import java.time.*;  public class GfG {    public static void main(String[] args)    {        // Get the LocalDateTime instance        LocalDateTime dt            = LocalDateTime                  .parse("2015-04-06T10:15:30");          // Get the String representation of this LocalDateTime        System.out.println("Original LocalDateTime: "                           + dt.toString());          // Get a new LocalDateTime with seconds 59        System.out.println("New LocalDateTime: "                           + dt.withSecond(59));    }} |
Original LocalDateTime: 2015-04-06T10:15:30 New LocalDateTime: 2015-04-06T10:15:59
Reference: https://docs.oracle.com/javase/10/docs/api/java/time/LocalDateTime.html#withSecond(int)
