FULL PRODUCT VERSION :
JDK 1.8_101

ADDITIONAL OS VERSION INFORMATION :
Windows 10

EXTRA RELEVANT SYSTEM CONFIGURATION :
An existing date with 29 as day of month is changed to Feb in a leap year using withMonth() and withYear() methods.

A DESCRIPTION OF THE PROBLEM :
An existing date with 29 as day of month is changed to Feb in a leap year using withMonth() and withYear() methods. The date is squared off to February 28 by program.

Expected behaviour:
The date should be 29 February if the given year is leap year.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
 LocalDate testDay = LocalDate.of(1947, Month.AUGUST, 29);
        System.out.println("Test Day: " + testDay);

        independenceDay = testDay.withMonth(2).withYear(2000);
        System.out.println("Local Date Test with given Month and Year: " + independenceDay);

Run the above lines of code with LocalDate

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Expected behaviour:
The date should be 29 February if the given year in the withYear() is leap year.
ACTUAL -
 LocalDate testDay = LocalDate.of(1947, Month.AUGUST, 29);
        System.out.println("Test Day: " + testDay);

       LocalDate independenceDay = testDay.withMonth(2).withYear(2000);
        System.out.println("Local Date Test with given Month and Year: " + independenceDay);

The output is:
Test Day: 1947-08-29
Local Date Test with given Month and Year: 2000-02-28

//Expected output:
Test Day: 1947-08-29
Local Date Test with given Month and Year: 2000-02-29

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
package DateTime;

import java.time.ZonedDateTime;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.Month;
import java.time.ZoneId;

public class DateTimeClass
{
    public static void main(String args[])
    {
        DateTimeClass dateTimeTester = new DateTimeClass();
        dateTimeTester.testLocalDateTime();
       
    }

    public void testLocalDateTime()
    {

        LocalDate testDay = LocalDate.of(1947, Month.AUGUST, 29);
        System.out.println("Test Day: " + testDay);

        LocalDate independenceDay = testDay.withMonth(2).withYear(2000);
        System.out.println("Local Date Test with given Month and Year: " + independenceDay);

     
    }

  
}
---------- END SOURCE ----------