An immutable copy of a LocalDateTime with the seconds altered as required is done using the method withSecond() in the LocalDateTime class in Java. This method requires a single parameter i.e. the second that is to be set in the LocalDateTime and it returns the LocalDateTime with the second altered as required.A program that demonstrates this is given as follows −Example Live Demoimport java.time.*; public class Main {    public static void main(String[] args) {       LocalDateTime ldt1 = LocalDateTime.parse("2019-02-18T23:15:30");       System.out.println("The LocalDateTime is: " + ldt1);       LocalDateTime ldt2 = ldt1.withSecond(45);       ... Read More

An immutable copy of a LocalDateTime object where some years are added to it can be obtained using the plusYears() method in the LocalDateTime class in Java. This method requires a single parameter i.e. the number of years to be added and it returns the LocalDateTime object with the added years.A program that demonstrates this is given as follows −Example Live Demoimport java.time.*; public class Demo {    public static void main(String[] args) {       LocalDateTime ldt = LocalDateTime.now();       System.out.println("The current LocalDateTime is: " + ldt);       System.out.println("The LocalDateTime with 2 years added is: ... Read More

The representation of the LocalDate can be obtained using the method toLocalDate() in the LocalDateTime class in Java. This method requires no parameters and it returns the LocalDate value of the LocalDateTime object.A program that demonstrates this is given as follows −Example Live Demoimport java.time.*; import java.util.*; public class Demo {    public static void main(String[] args) {       LocalDateTime ldt = LocalDateTime.parse("2019-02-18T23:15:30");       System.out.println("The LocalDateTime is: " + ldt);       System.out.println("The LocalDate representation is: " + ldt.toLocalDate());    } }OutputThe LocalDateTime is: 2019-02-18T23:15:30 The LocalDate representation is: 2019-02-18Now let us understand the above program.First ... Read More

The representation of the LocalTime can be obtained using the method toLocalTime() in the LocalDateTime class in Java. This method requires no parameters and it returns the LocalTime value of the LocalDateTime object.A program that demonstrates this is given as follows −Example Live Demoimport java.time.*; import java.util.*; public class Demo {    public static void main(String[] args) {       LocalDateTime ldt = LocalDateTime.parse("2019-02-18T23:15:30");       System.out.println("The LocalDateTime is: " + ldt);       System.out.println("The LocalTime representation is: " + ldt.toLocalTime());    } }OutputThe LocalDateTime is: 2019-02-18T23:15:30 The LocalTime representation is: 23:15:30Now let us understand the above program.First ... Read More

The string value of the LocalDateTime object can be obtained using the method toString() in the LocalDateTime class in Java. This method requires no parameters and it returns the string value of the LocalDateTime object.A program that demonstrates this is given as follows −Example Live Demoimport java.time.*; public class Demo {    public static void main(String[] args) {       LocalDateTime ldt = LocalDateTime.parse("2019-02-18T23:15:30");       System.out.println("The LocalDateTime is: " + ldt.toString());    } }OutputThe LocalDateTime is: 2019-02-18T23:15:30Now let us understand the above program.The string value of the LocalDateTime is obtained using the method toString() and then this value ... Read More

It can be checked if a ChronoUnit is supported by the LocalDateTime class or not by using the isSupported() method in the LocalDateTime class in Java. This method requires a single parameter i.e. the ChronoUnit to check. It returns true if the ChronoUnit is supported by the LocalDateTime class and false otherwise.A program that demonstrates this is given as follows −Example Live Demoimport java.time.*; import java.time.temporal.*; public class Demo {    public static void main(String[] args) {       LocalDateTime ldt = LocalDateTime.now();       System.out.println("The LocalDateTime is: " + ldt);       boolean flag = ldt.isSupported(ChronoUnit.HOURS);   ... Read More

An immutable copy of a LocalDateTime where the required duration is added to it can be obtained using the plus() method in the LocalDateTime class in Java. This method requires two parameters i.e. the duration to be added and the TemporalUnit of the duration. Also, it returns the LocalDateTime object with the required duration added to it.A program that demonstrates this is given as follows −Example Live Demoimport java.time.*; import java.time.temporal.*; public class Demo {    public static void main(String[] args) {       LocalDateTime ldt = LocalDateTime.now();       System.out.println("The LocalDateTime is: " + ldt);       ... Read More

An immutable copy of a LocalDateTime where the required duration is subtracted from it can be obtained using the minus() method in the LocalDateTime class in Java. This method requires two parameters i.e. the duration to be subtracted and the TemporalUnit of the duration. Also, it returns the LocalDateTime object with the required duration subtracted from it.A program that demonstrates this is given as follows −Example Live Demoimport java.time.*; import java.time.temporal.*; public class Demo {    public static void main(String[] args) {       LocalDateTime ldt = LocalDateTime.now();       System.out.println("The LocalDateTime is: " + ldt);       ... Read More

The LocalDateTime instance can be obtained from a string value using the parse() method in the LocalDateTime class in Java. This method requires a single parameter i.e. the string which is to be parsed. This string cannot be null. Also, it returns the LocalDateTime instance obtained from the string value that was passed as a parameter.A program that demonstrates this is given as follows −Example Live Demoimport java.time.*; public class Demo {    public static void main(String[] args) {       LocalDateTime ldt = LocalDateTime.parse("2019-02-18T23:15:30");       System.out.println("The LocalDateTime is: " + ldt);    } }OutputThe LocalDateTime is: 2019-02-18T23:15:30Now ... Read More

The LocalDateTime object can be queried as required using the query method in the LocalDateTime class in Java. This method requires a single parameter i.e. the query to be invoked and it returns the result of the query.A program that demonstrates this is given as follows −Example Live Demoimport java.time.*; import java.time.temporal.*; public class Demo {    public static void main(String[] args) {       LocalDateTime ldt = LocalDateTime.parse("2019-02-18T23:15:30");       System.out.println("The LocalDateTime is: " + ldt);       String precision = ldt.query(TemporalQueries.precision()).toString();       System.out.println("The Precision for the LocalDateTime is: "+ precision);    } }OutputThe LocalDateTime ... Read More