3 months gap between from date java code example

Example 1: calculate number of years months and days between two dates in java

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
		
Date birth = sdf.parse("2000-01-01");
Date now = new Date(System.currentTimeMillis());
		
Calendar c = Calendar.getInstance();
c.setTimeInMillis(now.getTime() - birth.getTime());
int y = c.get(Calendar.YEAR)-1970;
int m = c.get(Calendar.MONTH);
int d = c.get(Calendar.DAY_OF_MONTH)-1;

Example 2: how to calculate the amount of months between two dates java

LocalDate jamesBirthDay = new LocalDate(1955, 5, 19);
LocalDate now = new LocalDate(2015, 7, 30);
        
int monthsBetween = Months.monthsBetween(jamesBirthDay, now).getMonths();
int yearsBetween = Years.yearsBetween(jamesBirthDay, now).getYears();
        
System.out.println("Month since father of Java born : " 
                    + monthsBetween);
System.out.println("Number of years since father of Java born : " 
                    + yearsBetween);

Example 3: 3 months gap between from date java

import java.time.*;
import java.util.*;

public class Exercise1 {  
   public static void main(String[] args)
    {
        LocalDate pdate = LocalDate.of(2012, 01, 01);
        LocalDate now = LocalDate.now();
 
        Period diff = Period.between(pdate, now);
 
     System.out.printf("\nDifference is %d years, %d months and %d days old\n\n", 
                    diff.getYears(), diff.getMonths(), diff.getDays());
  }
}