জাভাতে ডেট তুলনার বিভিন্ন পদ্ধতি

উদাহরণ

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class Sample {
    public static void main(String args[]) throws ParseException {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-dd-MM");
        Date date1 = formatter.parse("2007-11-25");
        Date date2 = formatter.parse("1999-9-12");

        Boolean bool1 = date1.after(date2);
        Boolean bool2 = date1.before(date2);
        Boolean bool3 = date1.equals(date2);

        if (bool1) {
            System.out.println(date1 + " is after " + date2);
        } else if (bool2) {
            System.out.println(date1 + " is before " + date2);
        } else if (bool3) {
            System.out.println(date1 + " is equals to " + date2);
        }
    }
}

আউটপুট

Sun Jan 11 00:00:00 IST 2009 is after Thu Dec 09 00:00:00 IST 1999

Calendar ক্লাস ব্যবহার

Calendar ক্লাসও before(), after(), equals() মেথড দিয়ে দুটি ডেট তুলনা করতে দেয়।

উদাহরণ

import java.util.Calendar;

public class Sample {
    public static void main(String args[]) {
        Calendar obj1 = Calendar.getInstance();
        obj1.set(2007, 11, 25);

        Calendar obj2 = Calendar.getInstance();
        obj2.set(1999, 9, 15);

        Boolean bool1 = obj1.after(obj2);
        Boolean bool2 = obj1.before(obj2);
        Boolean bool3 = obj1.equals(obj2);

        if (bool1) {
            System.out.println(obj1 + " is after " + obj2);
        } else if (bool2) {
            System.out.println(obj1 + " is before " + obj2);
        } else if (bool3) {
            System.out.println(obj1 + " is equal to " + obj2);
        }
    }
}

আউটপুট

java.util.GregorianCalendar[...YEAR=2007,MONTH=11,DAY_OF_MONTH=25...] is after java.util.GregorianCalendar[...YEAR=1999,MONTH=9,DAY_OF_MONTH=15...]