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Java LocalDate with() Method

Java with() method is used to get a new date by setting a new value of the specified field. It returns a copy of this date with the specified field set to a new value.

For example, we have a date 2012-10-12 then by specifying DAY_OF_MONTH value as 15, we get a new date 2012-10-15.

Temporal type can be specified with a ChronoField. The supported fields of ChronoField are as follows:

  • DAY_OF_WEEK

  • ALIGNED_DAY_OF_WEEK_IN_MONTH

  • ALIGNED_DAY_OF_WEEK_IN_YEAR

  • DAY_OF_MONTH

  • DAY_OF_YEAR

  • EPOCH_DAY

  • ALIGNED_WEEK_OF_MONTH

  • ALIGNED_WEEK_OF_YEAR

  • MONTH_OF_YEAR

  • PROLEPTIC_MONTH

  • YEAR_OF_ERA

  • YEAR

  • ERA

It takes two arguments first is Temporal type and second is long type. The syntax of the method is given.

Syntax

public LocalDate with(TemporalField field, long newValue)

Parameters:

field - the field to set in the result.

newValue - the new value of the field in the date.

Returns:

It returns a LocalDate based on this with the specified field.

Time for an Example:

Let's take an example to create a new date by setting a new value of a field. Here, we are using with() method to set new day of the date.

import java.time.LocalDate;
import java.time.temporal.ChronoField;
public class DateDemo {
	
	public static void main(String[] args){  
		
		LocalDate localDate = LocalDate.of(2002, 01, 10);
		System.out.println(localDate);
		localDate = localDate.with(ChronoField.DAY_OF_MONTH, 15);
		System.out.println("New Date : "+localDate);
	}
}


2002-01-10
New Date : 2002-01-15

Time for another Example:

Let's take an another example to understand the with() method. Here, we are setting a new value of date by specifying the DAY_OF_YEAR value.

import java.time.LocalDate;
import java.time.temporal.ChronoField;
public class DateDemo {
	
	public static void main(String[] args){  
		
		LocalDate localDate = LocalDate.of(2002, 01, 10);
		System.out.println(localDate);
		localDate = localDate.with(ChronoField.DAY_OF_YEAR, 35);
		System.out.println("New Date : "+localDate);
	}
}


2002-01-10
New Date : 2002-02-04

Live Example:

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About the author:
I am a 3rd-year Computer Science Engineering student at Vellore Institute of Technology. I like to play around with new technologies and love to code.