LocalDate format() method in Java
Last Updated :
28 Nov, 2018
The format() method of LocalDate class in Java method formats this date using the specified formatter.
Syntax:
public String format(DateTimeFormatter formatter)
Parameter: This method accepts a parameter obj which specifies the formatter to be used and it is not null.
Exceptions: The function throws only DateTimeException which occurs during an error in printing.
Return Value: It returns the formatted date string and not null.
Below programs illustrate the format() method of LocalDate in Java:
Program 1:
import java.util.*;
import java.time.*;
import java.time.format.DateTimeFormatter;
public class GfG {
public static void main(String[] args)
{
LocalDate dt = LocalDate.parse( "2018-11-01" );
System.out.println(dt);
DateTimeFormatter formatter = DateTimeFormatter.ofPattern( "dd/MM/YYYY" );
System.out.println(formatter.format(dt));
}
}
|
Output:
2018-11-01
01/11/2018
Program 2: To illustrate the exception.
import java.util.*;
import java.time.*;
import java.time.format.DateTimeFormatter;
public class GfG {
public static void main(String[] args)
{
try {
LocalDate dt = LocalDate.parse( "2018-01-32" );
System.out.println(dt);
DateTimeFormatter formatter = DateTimeFormatter.ofPattern( "dd/MM/YYYY" );
System.out.println(formatter.format(dt));
}
catch (Exception e) {
System.out.println(e);
}
}
}
|
Output:
java.time.format.DateTimeParseException:
Text '2018-01-32' could not be parsed: Invalid value for DayOfMonth (valid values 1 - 28/31): 32
Reference: https://docs.oracle.com/javase/10/docs/api/java/time/LocalDate.html#format(java.time.format.DateTimeFormatter)
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