Java LocalDate

In Java, the LocalDate class denotes the Date with a format of yyyy – mm – dd default. It does not indicate the time or time zone, but the date description is represented.

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It has certain features:

• Java LocalDate is an immutable class.
• People mainly use LocalDate to represent dates such as birthdays or holidays, where time zone or time information is unnecessary.
• Java LocalDate class can’t be extended as it is the final class.
• As it is a value-based class, you can compare two LocalDate instances using the equals() method.

Java LocalDate Class Declaration:

public final class Local Date extends Object implements Temporal, TemporalAdjuster, ChronoLocalDate, Serializable

Top 18 Methods for Java LocalDate

The following are the commonly used methods in Java LocalDate:

1. getMonth()

The month-of-year field will be returned with the help of the Month enum.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2018-04-21");
// Prints the month
System.out.println(ld.getMonth());
}
}

Output:

2. format( DateTimeFormatter formatter )

The Date will be formatted using the mentioned formatter.

Code:

import java.util.*;
import java.time.*;
import java.time.format.DateTimeFormatter;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2018-04-21");
// Prints the date in specified format
DateTimeFormatter f = DateTimeFormatter.ofPattern("dd/MM/YYYY");
System.out.println(f.format(ld));
}
}

Output:

3. adjustInto( Temporal temp )

The mentioned temporal object temp will be adjusted with the Date of the Object.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
ZonedDateTime d = ZonedDateTime.now();
// Date parsing
LocalDate ld = LocalDate.parse("2018-04-21");
// adjusts the date
d = (ZonedDateTime)ld.adjustInto(d);
System.out.println(d);
}
}

Output:

4. getChronology

The chronology of the calendar will be returned, where the calendar system is ISO.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2018-04-21");
// Prints the chronology in ISO system
System.out.println(ld.getChronology());
}
}

Output:

5. getDayOfMonth()

Field day-of-month will be retrieved.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2018-04-21");
// Prints the day of month
System.out.println(ld.getDayOfMonth());
}
}

Output:

6. getDayOfWeek()

Field day-of-week will be retrieved.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2018-04-21");
// Prints the day of week
System.out.println(ld.getDayOfWeek());
}
}

Output:

7. getDayOfYear()

Field day-of-year will be retrieved.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2018-04-21");
// Prints the day of year
System.out.println(ld.getDayOfYear());
}
}

Output:

8. compareTo( ChronoLocalDated1 )

The method will compare this Date to another date.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2018-02-21");
// Date parsing
LocalDate ld1 = LocalDate.parse("2018-02-14");
// Prints the day of year
System.out.println(ld.compareTo(ld1));
}
}

Output:

9. lengthOfMonth()

The function will return the length of the month based on the Date.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2018-02-21");
// Prints the LENGTH OF THE MONTH
System.out.println(ld.lengthOfMonth());
}
}

Output:

10. lengthOfYear()

The function will return the length of the year based on the Date.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2019-02-21");
// Prints the LENGTH OF THE MONTH
System.out.println(ld.lengthOfYear());
}
}

Output:

11. withMonth( int month )

The function will return a copy of the Date, with the month changed as specified.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2018-02-21");
//month that want to be changed to
LocalDate r = ld.withMonth(10);
// Prints the new date
System.out.println(r);
}
}

Output:

12. withYear( int year )

he function will return a copy of the Date, with the year changed as specified.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2018-02-21");
//year that want to be changed to
LocalDate r = ld.withYear(1992);
// Prints the new date
System.out.println(r);
}
}

Output:

13. withDayOfYear( int doy )

The function will return the Date, with the day of the year changed as specified.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2018-02-21");
LocalDate r = ld.withDayOfYear(44);
// Prints the new date
System.out.println(r);
}
}

Output:

14. withDayOfMonth( int dom )

The function will return the Date, with the day of the month changed as specified.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2018-02-21");
LocalDate r = ld.withDayOfMonth(23);
// Prints the new date
System.out.println(r);
}
}

Output:

15. isLeapYear()

True or False will be returned based on whether the year has given is a leap year or not, respectively.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2019-02-21");
// Prints the LENGTH OF THE MONTH
System.out.println(ld.isLeapYear());
}
}

Output:

16. isAfter( ChronoLocalDatedate )

Checks whether this Date is after the mentioned Date.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2019-02-21");
// Date parsing
LocalDate ld1 = LocalDate.parse("2019-04-21");
// Prints the LENGTH OF THE MONTH
System.out.println(ld.isAfter(ld1));
}
}

Output:

17. isBefore( ChronoLocalDatedate )

Checks whether this Date is before the mentioned Date.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2019-04-21");
// Date parsing
LocalDate ld1 = LocalDate.parse("2019-02-21");
// Prints the LENGTH OF THE MONTH
System.out.println(ld.isBefore(ld1));
}
}

Output:

18. getYear()

The year field will be returned.

Code:

import java.util.*;
import java.time.*;
public class LocalDateExample {
public static void main(String[] args)
{
// Date parsing
LocalDate ld = LocalDate.parse("2018-04-21");
// Prints the month
System.out.println(ld.getYear());
}
}

Output:

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